Citrix Profile Management: VHDX-based Outlook cache and Outlook search index on a user basis.

Behaviour prior to Profile Management 7.18

There have been two Outlook-related performance challenges with Citrix Profile Management.

To best explain, we’ll take a user that has an existing Profile Management 7.17 profile and launches published Outlook (or opens Outlook in a desktop session). Outlook has been configured to use the Outlook .OST cache. The location of the file is typically:

C:Users<user>AppDataLocalMicrosoftOutlook<email address>.OST

In Outlook cached mode, the OST file can be very large, so there is a significant overhead if the OST file is part of Profile Management logon/logoff synchronization.

Actions in Outlook, such as sending/receiving mail result in changes to the Outlook search index database. This data is stored in the Windows search index database: Windows.edb.

This is a machine-based file, which means it holds search index data for all users logging onto the machine. If a user launches an Outlook session (or opens Outlook in a desktop session) on a VDA machine that they haven’t access previously or haven’t accessed for a while, the Outlook search index has to be rebuilt in Windows.edb. Outlook searches have to wait until re-indexing finishes. The location of the Windows search index database is typically: C:ProgramDataMicrosoftSearchDataApplicationsWindowsWindows.edb

We can see this design in the image below:

User-added image

Behavior using VHDX-based Outlook cache and Outlook search index on a user basis

The Profile Management 7.18 release introduced a feature to address these Outlook-related performance challenges.

To explain we’ll use the same user as above, but logging on to a 7.18 version VDA for the first time.

During the Profile Management logon, the user’s Outlook-related search index is split out of the Windows search index database (Windows.edb) and written to a VHDX file created at:


The remote VHDX file is then mounted locally in the user’s local profile at:


From this point, the user has their own profile-based version of the Outlook search index database. Within the Search.vhdx mount-point folder, the Outlook search index database is named < userSID>.edb

The Outlook .OST file is converted into a VHDX file and stored at:

PathToUserStore<User_information>VHD<Platform> OutlookOST.vhdx

The remote VHDX file is then mounted locally in the user’s local profile at (default):


During the Outlook session, changes to the Outlook search index and Outlook .OST are made directly to their respective VHDX files over SMB.

The feature also requires additional registry settings to be created. Read the Registry Changes section for further information.

When the user logs off the session, both VHDX files are unmounted from the local profile. Because the VHDX files had been mounted over SMB, no synchronization is required at Profile Management logoff. The additional registry settings are synchronized to the user’s profile store (or before if the Active Writeback Registry feature has been enabled).

Feature Enhancements introduced in Citrix Virtual Apps and Desktops 1808

The Profile Management 1808 release Outlook search index feature supports groups explicitly excluded through the Profile Management Excluded Groups policy as well and groups implicitly excluded through the Profile Management Processed Groups policy (see Feature Limitations for further information).

This release also introduced support for Windows 10 1803.

Feature Limitations


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Top 6 Ways to Fix Cannot Expand Folder Error in Outlook

5. Create a New Outlook Profile

It is recommended that you follow point 4 above before moving on to create a new profile. Rename the folder that you can’t expand in Outlook. Right-click on the folder and select the Rename option to do so. Take a backup, if you must. If you have taken a backup on the server or in the cloud, delete the profile the below mentioned:


Of course, the Username above and the drive letter should be your corresponding user name and Windows installation drive. Reboot your computer.

Open Outlook and under the Files menu, click on Account Settings > Manage Profiles.

Click on Show Profiles.

Click on Add to begin creating a new profile.

You can now add email accounts to this newly created profile and check if you still get the Cannot expand folder error.

6. Repair PST and OST File

The Outlook email account data is stored in a .PST file if you are using IMAP or POP account. The same is stored in a .OST file if you are using Office 365 or Exchange account. Depending on the email account throwing the Cannot expand folder error in Outlook app, choose one method.

Repair OST File

Open Control Panel and go to User Account > Mail > Show Profiles. Select the profile you are having trouble with and click on Properties below. Now select Data Files in the pop-up that follows.

Select the email account data file and click on Open File Location.

A new window will open with a file name with .OST extension. Delete the file and reboot your computer. Launch Outlook and it will recreate the file automatically.

Repair PST File

The same steps won’t work for .PST file. Press Windows key+R to open the Run prompt. Enter the below file path in case of Office 2016, Office 2019, and Office 365.

C:Program Files (x86)Microsoft OfficerootOffice16

For Outlook 2013:

C:Program Files (x86)Microsoft OfficeOffice15

Double-click the SCANPST.EXE file, which will launch the Microsoft Outlook Inbox Repair experience. I wish there was a direct way of launching it.

Click on Browse on the pop-up that follows.

A new File Explorer window will open. You need to locate the .PST file here and when you find it, click on the Start button.

Select ‘Make a backup of scanned file before repairing’ option to create a backup in case something goes wrong.

Now click on Repair to begin the process.

Look Out

There are way too many versions of Outlook that Microsoft has released over the years. That makes troubleshooting a bit more difficult. However, we try our best to offer the best workable solutions. If you have found another way to solve the Cannot open folder error in the Outlook app, let us know in the comments below.

Next up:Using Microsoft Outlook on your smartphone? Here are 9 cool Outlook tips and tricks for Android and iOS.

Last updated on 29 Feb, 2020
Read NextTop 9 Outlook Email Tips and Tricks for iOS and AndroidAlso See#email #Microsoft

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Gaurav Bidasaria

Gaurav is a tech enthusiast who loves talking about new gadgets and innovations. He dropped out of CA because he found the work life boring and monotonous! He recently started working out but mostly, you will find him on the couch either Netflix-ing or gaming.

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    Save Outlook: Five Ways to Recover Email from Error 0x8004010F

    Email services with a bright design and many new features appear almost every day. However, none of them could replace Outlook or at least compete with it. You can only come to terms with this. The secret to the popularity of the service is that it is part of the Microsoft Office suite, intuitive and straightforward. Besides, only Outlook allows you to take full advantage of the many features of Microsoft Exchange Server.

    Of course, Outlook is not only mail but also a diary, calendar, notes, and messages. Almost all human life is stored in one encrypted file. Therefore, it’s not very good if, when you try to enter the mail client, such a message pops up: 0x8004010F: Outlook data file cannot be accessed.

    No panic! We will try to find out what happened to the mail. Most likely, it’s not too late to save it.

    Save Outlook: Five Ways to Recover Email from Error 0x8004010F 09 |

    Spoiler: I’m not particularly eager to look in the answers, but if someone is in a hurry, the Recovery Toolbox for Outlook which is very useful in such situations, saved me.

    Returning the Outlook File

    The appearance of the 0x8004010F error means that the Outlook file that stores all the mail is damaged or lost. Gone with the spring wind? It doesn’t matter what happened. You can quickly recover lost mailings if you use a server with IMAP protocol support (Exchange Server, Office365, Gmail,, and the like).

    How does it work? The server automatically saves a copy of the file stored on the hard disk; therefore, at any time, we can access the lost data. To do this, you need to abandon the local file that has stopped responding and create a new one using the unique Outlook tool.

    Very similar to syncing local data with the cloud, right? Specialized knowledge for recovery is not needed, and the process itself consists of six easy steps-further details.

    Recovering an Outlook Account from a Remote Server

    • Start Outlook.
    • Go to Account settings.
    • Select the account you want to recover.
    • Select the Change folder.
    • Click the New Outlook Data File.
    • Confirm the changes with OK.

    If everything went well, you would get access to the lost mail. Exhale and go to check the mailing list. If not, then with a nasty sound this window will pop up:

    Save Outlook: Five Ways to Recover Email from Error 0x8004010F 08 |

    This popup often happens. Try disabling any programs that could affect the recovery process and carry out the procedure from the very beginning. However, the chances of success tend to zero. Mail is not available on the remote server, which is possible, for example, if Outlook uses the POP3 protocol, and all mailings are stored in one local file.

    No need to worry. Even after recovery using the server failed, options remain. First, check the Windows settings; there is a chance that they cause the failure. You may not have permission to access the local Outlook file, and this will lead to an error. To configure access rights, do the following:

    1. Launch Windows Explorer.

    2. Select the desired PST file. If its location is unknown, you can find the file using the same explorer, for this, enter in the window: “*.pst” (without quotes).

    Save Outlook: Five Ways to Recover Email from Error 0x8004010F 01 |

    3. Right-click on the file.

    4. Go to Properties.

    5. Uncheck the box next to Read Only.

    6. Click on the Security tab.

    Save Outlook: Five Ways to Recover Email from Error 0x8004010F 02 |

    7. In the “Groups and Users” menu, you need to select the account under which you are logged in.

    8. Make sure that all permissions (except for Special Permissions) are checked.

    9. Confirm changes by clicking OK.

    Permissions configured, but file still unavailable? So, let’s move on. Unfortunately, there are not many options left. The only thing that remains after you tried to restore mail from the server and set the correct system settings is to restore from a backup or other backup mail, PC. Or you can try to repair the damaged file using special programs and services.

    Mail Recovery Using Microsoft Office Tools

    Please take care of backup in advance-restore mail and forget about the error with the code 0x8004010F: Outlook data file cannot be accessed for a long time. If there is no backup, then you need to look for a unique tool. The good news: one of the most popular PST file recovery software is already on your computer.

    We are talking about the Inbox Repair Tool, which comes with the office suite. The tool is easy to use and, importantly, completely free, you need to look for it here:

    • Outlook 2019/2016: C:Program Files (x86)Microsoft OfficerootOffice16
    • Outlook 2013: C:Program Files (x86)Microsoft OfficeOffice15
    • Outlook 2010: C:Program Files (x86)Microsoft OfficeOffice14

    Unfortunately, the free tool does not always work, but the Inbox Repair Tool does not take much time either. It makes sense first to try to solve the problem with its help. If it did not work out, we would look for other options, in any case, you need to return the email.

    Online Services

    The online recovery and conversion services for Outlook databases give good chances, but you have to pay for the pleasure. There are a large number of such sites, ones of the most popular:

    The whole process takes five minutes to lose:

    • Select a file on your hard drive
    • Enter your email
    • Enter the verification code correctly
    • Pay for the service in one of the ways offered by the site

    If everything is done correctly, and it could not be otherwise, you will receive a link to the corrected file. The cost of the service usually does not exceed ten dollars for one file up to 1 GB in size. The only question is security.

    If you are not satisfied that someone unknown will get access to your personal data-bank card numbers, passwords from social networks, family photos-it is better to choose a method that is not related to sending mail to a remote server. For example, install a particular program.

    Recovery Toolbox for Outlook

    A convenient and inexpensive tool, you can download it from the link: The program does not require connection with third-party sites. Therefore there are no privacy problems when using Recovery Toolbox for Outlook. It’s easy with which to work. The developers made sure that you can proceed immediately after installation. Before you begin, it is recommended that you backup an important file.

    In such a simple way, you not only protect yourself from surprises, but you can also check the system. If a Windows error pops up during the copy process, you must format or change the hard drive, and then reinstall the system. To not have a disaster again, in the future, do not forget to backup the operating system. The backup will save you nerves and improve digestion.

    Bug the error 0x8004010F: Outlook data file cannot be accessed

    Recovery Toolbox for Outlook performs well in recovering Outlook accounts after error 8004010F. What do we have to do:

    1. Download and install the tool from the official website:

    2. Run the installed program.

    3. Find the file we need on disk.

    Save Outlook: Five Ways to Recover Email from Error 0x8004010F 03 |

    4. Left-click on Recovery Mode.

    5. Select the folder with the Outlook files.

    6. Replace the damaged file with the corrected.

    Note! In the latest versions of Outlook, you can replace the file either by manually moving it to the Outlook folder or by using the program method, which needs to be done like this:

    1) Select the item File/Details

    2) Click Account Settings

    Save Outlook: Five Ways to Recover Email from Error 0x8004010F 05 |

    3) Select Data Files

    4) Select a damaged file from the list

    5) Click Open file location…

    Save Outlook: Five Ways to Recover Email from Error 0x8004010F 06 |

    That’s all. Next, we need to delete the old file, otherwise sooner or later, errors will pop up.


    Now it remains only to test the work of Outlook. If everything is done according to the instructions, error 0x8004010F: Outlook data file cannot be accessed will not bother you for a long time. Otherwise, reread the article and try to figure out what exactly was done wrong. I hope this little setback did not stop you halfway.

    Remember that you can always contact Recovery Toolbox for Outlook support. Experienced specialists will help you. Of course, only if you use the licensed version of the program or pay for the work of the online service.

    On this, I say goodbye to you and wish you good luck.


    How To Fix Outlook Error 0x8004010F With RecoveryToolBox

    There are many possibilities. For example, if your mailbox does not use a remote server, then it is stored locally using the POP3 protocol. All copies are removed from the server immediately after the data reception. We now need a new plan. Fortunately, we do have one. we will not abandon you.

    To begin, let’s check. It is too early to panic. The issue relates to some incorrect Windows parameters. For example, it could be the access rights to Outlook files? We need to do the following:

    1. Choose the file in the Windows Explorer. If you do not know where it is stored, search in the Explorer, look for a file of .PST format
    2. Right-click on the detected file.
    3. Choose Properties.
    4. Do you see the Read Only checkbox? If yes, remove it.
    5. Go to the Security tab
    6. Select a user, logged in to the system, and check their permissions: need to allow all operations with the file.
    7. Click ОК, to confirm the changes.

    The permissions seem to be correct, but the issue is not resolved? The pickings are slim here, regardless of a significant number of Google links that are related to the problem: 0x8004010F: Outlook data file cannot be accessed.

    It is either an email backup or third-party services of data recovery, nothing more. Do you have a backup? Great! No need to read the rest of this text, restore, no other issues. If you do not have a backup, there is no need to panic. Not all is lost.

    Outlook Data Recovery

    Outlook has its own data recovery solution. It is named Inbox Repair Tool. The software is not complicated. Nothing matters more than it is free. It is already installed on your PC and can be found in the folders of Microsoft Office:

    • Outlook 2019: C:Program Files (x86)Microsoft OfficerootOffice16
    • Outlook 2016: C:Program Files (x86)Microsoft OfficerootOffice16
    • Outlook 2013: C:Program Files (x86)Microsoft OfficeOffice15
    • Outlook 2010: C:Program Files (x86)Microsoft OfficeOffice14
    • Outlook 2007: C:Program Files (x86)Microsoft OfficeOffice12

    Try to resolve the issue using Inbox Repair Tool. In most cases, it is enough to fix the issue, saving you time and money. Unfortunately, it does not always help. If this is the case, read more. There is no way out; we cannot survive without email and therefore need to solve the issue at all costs.

    For real, there are several data recovery services; for example, this one: On the webpage, you need to provide the correct path to a damaged file of PST or OST format on the local HDD. After this, do the following:

    1. Provide your email address
    2. Enter CAPTCHA
    3. Finally, pay for a session of data recovery

    If you did it correctly (you probably did, it is not that complicated), download a recovered file during the last stage.

    Now there is the matter of price and confidentiality. You can upload a damaged file on the remote server and ask for it to be fixed. It is inexpensive — it costs $10 for a file not larger than 1 Gb.

    However, it could be dangerous. It is not usually likely that your personal correspondence would interest someone. But who knows? Think, do you have bank emails, credentials for your own space, photos of credit cards in your mailbox?

    If you are not sure — do not do it. It is not necessary to upload your email to a remote server. There are other options.

    For Example, the Following Tool:Recovery Toolbox for Outlook (

    First of all, noted the safety of the application. We could not find anyone claiming the theft of personal information by this service. Recovery Toolbox for Outlook is a small program installed on the computer.

    It does not establish connections to any external sites. Typically, it is more accessible than you may think. Developers understand that users read instructions after the damage is done. So, there is nothing to harm here, open it, and launch.

    Before you launch the Recovery Toolbox, it makes sense to copy a PST file from Microsoft Outlook to another disk as a backup. Yes, when analyzing data, Recovery Toolbox for Outlook does not change the input file.

    However, by making a copy of the PST file, we kill two birds with one stone. Firstly, a spare copy of a business-critical Outlook file will not be necessary. Secondly, we check the integrity of the HDD.

    Wasn’t that easy? If an attempt of PST file copying causes a Windows error, please accept my sincere condolences. The issue is worse than expected. We need to recover the whole system, which is an entirely different story.

    By the way, for the future, remember it is much easier to prevent an issue than to fix its consequences. The most important thing is to do a regular backup of all data, which helps to save your money and mental health.

    How to fix the issue: 0x8004010F: Outlook data file cannot be accessed

    To correct the following issue 8004010F when using POP3/SMTP accounts in Microsoft Outlook, do the following:

    1. Download, install and start Recovery Toolbox for Outlook from the site:
    2. Choose a damaged .PST file in the first window
    3. Choose RecoveryMode
    4. Choose a folder to save a recovered file
    5. Replace the damaged PST file by a recovered one

    Yes, in the very end, you should replace the corrupted file to a recovered one or merely add the recovered file to the list of data files in Outlook. For the following versions of Outlook: 2019, 2016, 2013, it is done as follows:

    1. Choose the menu item “File | Info.”
    2. Click the button “Account settings.”
    3. Choose “Account settings” in the popup menu.
      • Choose the “Data Files”
      • Choose a data file from the list below.
      • Click the following button “Open File Location.”

    In this case, do not forget to remove the old damaged file to avoid new issues in the future.

    Lastly, you can finally open Microsoft Outlook and keep on working with the email. If there are no issues with email sending and receiving, then you have done everything correctly. There only remains for me to be happy with you. Alternatively, try to reread the article and understand what went wrong.

    Google suggests a variety of solutions regarding this issue: 0x8004010F: Outlook data file cannot be accessed. But, if you have got confused, contact the support department and describe, what’s up. Sure, it makes sense only if you have paid for the recovery or purchased Recovery Toolbox for Outlook.

    Good luck to everyone. We hope you will never encounter viruses and bad HDD sectors.

    Filed in Computers. Read more about Email, Outlook and Sponsored.

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    EDB to PST Converter Open Source – Here You Go!

    Are you looking for an open source EDB to PST Converter tool? Want to download it for free? Did not find perfect match till now? No need to worry. Here, we have come up with a proper solution for the same.

    EDB to PST Converter EDB to PST Converter

    Microsoft Exchange Server is really popular among the users and storecomplete mailbox data like emails, contacts, calendars, etc., in EDBfile format. But there are some situations in which it becomes littledifficult for the users to access Exchange database EDB file. It canbe due to any reason like corruption in database, Exchange Server isunder maintenance, moving to some other platform, etc.

    In these scenarios, users are start searching for some solution tohave permanent and easy access to Exchange mailbox data. Therefore,one of the reliable way of overcoming this is convert EDB to PSTformat. Now, as it stores crucial information in it so, conversionprocess needs to carried without any loss of data. After this, thevery first question that strikes in user’s mind is how to do thesame. This is the reason user’s want open source EDB to PSTConverter. Considering this requirement, we have discussed a free EDBto PST Converter that you can easily download and use directly.

    What Makes User’s Look for Free EDB to PST Converter Tool?

    Before converting Exchange database file to some other file format,it is important to understand when it will be beneficial. To knowabout the same, continue reading the section below:

    • It might be possible that MS Exchange Server is under Maintenance and will take long to get completed. In this situation, even Exchange will be unable to perform any task.
    • Your organization is moving from Exchange Server to some other platform.
    • You simply want to backup / move / transfer Exchange data on local machine or to another place.

    MOST READ:How to Create Effective PR Ideas for Any Budget

    Apart from this, there is one more major reason behind it i.e.,corruption in Exchange database file. In order to recover EDB file,you need to convert it to PST format. Here, some of the possiblereasons behind damaged Exchange database file:

    • Whenever there is some technical fault in internet connectivity or there is a sudden power shutdown, Exchange shutdown abnormally resulting corruption in database.
    • Whenever there is Exchange Server downtime, there is possibility some unwanted errors. For example, virus attack or hardware failure, breakdown of Exchange information store, JET engine error, and many more.

    An Open Source EDB to PST Converter Tool : Try It Before Buying It!

    SysTools EDB to PST open sourceis one of the popular application that can let you all export Exchange mailbox data. A user can convert emails, contacts, calendars, notes, etc., from EDB to PST format in a few simple clicks. The software is designed in a manner that it supports EDB file of all version of Exchange Server. In addition, if a user wants, he or she can export selective data items from Exchange data to PST format via date-based and category filter.

    Features of EDB to PST Converter Open Tool

    • Export offline EDB mailbox to Outlook PST format
    • Capable to convert public folders and private mailboxes to PST format
    • Provide preview of EDB file data like emails, contacts, calendars, etc.
    • Allows to export even corrupted or damaged EDB files to PST data format
    • Remove SMIME / OpenPGP encryption from emails in EDB file
    • Compatible with all Exchange Server, Outlook & Windows versions

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    Try the demo of Free version of EDB to PST Converter. The software will export only first 25 items per folder. When you get satisfied with the working of the tool, you can activate the software with licensed version and have to complete access to it.

    You don’t have permission to book this resource error [QUICK FIX]

    A number of users have reported seeing the error message You don’t have permission to book this resource whenever they try to book a room (or other assets), by using the Outlook Exchange.

    This issue is caused by migrating the room mailbox from an on-premises location to the Outlook Exchange Online service. When the move is performed, the permissions of the server need to be assigned again to avoid this issue.

    This error message can cause a lot of confusion, as the initial settings of the local room mailbox seem to be in order at first glance. Even though that is the case, these features become inactive for security reasons. This protects the information stored on the servers from any third-party that wants to extract that information.

    For these reasons in this article, we will explore several troubleshooting methods to deal with this issue. Please follow the steps described in this guide closely to avoid any other issues.

    How to fix You don’t have permission to book this resource error?

    1. Assign corresponding permissions of the room mailbox to your Exchange Online account

    1. Log into the Exchange Admin Center with your administrator account.Microsoft Office 365 admin - You don't have permission to book this resourceMicrosoft Office 365 admin - You don't have permission to book this resource
    2. Navigate to Recipient -> Resources.Microsoft Office 365 admin - You don't have permission to book this resourceMicrosoft Office 365 admin - You don't have permission to book this resource
    3. Double-click the room mailbox.
    4. Inside the pop-up window that appears, select Mailbox Delegations.
    5. Add your administrator account inside the Full Access blank space.
    6. Click on the Save button.
    7. Open Room Mailbox again and check to see if the issue persists.

    Note: It is recommended that when performing these above steps, you use a private browsing session. Press CTRL+SHIFT+P for Mozilla Firefox, Microsoft Edge, and Internet Explorer. For Google Chrome press CTRL+SHIFT+N.

    Send emails like a pro with these great email clients!

    2. Add your account to Open Room MailboxExchangeOnline - You don't have permission to book this resourceExchangeOnline - You don't have permission to book this resource

    1. Log into your Open Room mailbox account.
    2. Select Options -> Resource Schedule page -> Add your account to the list.
    3. Inside your Outlook (with admin access) -> right-click Calendar -> select Data Properties.
    4. Inside the Permissions tab -> add the users with the appropriate access level -> click Save.Microsoft Office permissions - you don't have permission to book this resourceMicrosoft Office permissions - you don't have permission to book this resource
    5. Try to see if the issue persists.

    Another possible reason for this error message could be caused by users trying to book rooms with 1 year before the preset time limit. This information can be checked by going to Portal ->Exchance -> Recipients -> Calendar -> Edit booking options.

    In this article we explored a quick fix for the error You don’t have permission to book this resource when trying to reserve a room or other assets on Exchange Online.

    Because this issue is caused by porting the data storage from local to cloud, the problem can be fixed by re-allowing the access for each of the users inside your Microsoft Exchange Admin Center.

    Please feel free to let us know if this guide helped you solved your problem, by using the comment section found below.


    Re: Repair corrupt .pst file in Outlook

    If PST file doesn’t open in Outlook then try these methods to fix this problem:

    1. Try to open Outlook in Safe mode.

    2. Use Scanpst.exe free tool

    3. Open Task Manager > Kill any instance of Outlook > Reboot computer

    4. Go to Properties of PST file > Click on Unblock option > Open PST file in Outlook

    5. For HKEY_CURRENT_USERSoftwareMicrosoftOffice<number>Outlook

    (a) Add New / Expandable String Value

    (b) Name = ForcePSTPath

    (c) Value = <path to PST data folder> (e.g. P:MyDataOutlook )

    6. Automated Tool

    These 6 methods are very useful to repair corrupt .PST file in Outlook and also fix error “.pst file doesn’t open in Outlook”. Firstly try manual methods if it is not working then try automated tool. There are so many tools available online, I have mentioned few tools in this comment.


    HOW TO: Ways to fix Outlook error ‘cannot open your default email folders’

    Microsoft Outlook may be the most widely used email service around the globe, but users have come to accept the good with the very bad. Yes, Outlook offers an extensive and exclusive range of features as well as its friendly user experience. But there’s the flip side: User forums are filled with anger over errors that seem to have zero solutions. For this article, we will examine and hopefully resolve perhaps the most common Outlook error: “cannot open your default email folders.” This Outlook error mostly appears when you are trying to open your Outlook profile. It generally happens because of a corrupted OST file or the execution of Outlook in compatibility mode.

    Why OST file corruption happens

    OST files are the files that allow users to use Outlook while they are offline. It is actually a synchronized copied element of the accounts saved on your device that enables you to continue to use Outlook even when the program gets disconnected from MS Exchange Server.

    These files can become corrupted because of various reasons. Some of the reasons are:

    • Deletion of any file or folder removed from Exchange folder.
    • Intrusion of any malware or virus.
    • Disruption in the file synchronization process due to sudden or abnormal shutdown failure.
    • Some internal discrepancies in Outlook causing abnormal Outlook termination.
    • Creation of some bad sectors in the hard drive where the OST file is stored.
    • Failure of any networking device that might disrupt the synchronizing process of the OST file.
    • Any changes in the internal structures of the OST file.
    • Installed plugins sometimes may damage Outlook performance, thus causing damage to the OST file.

    Fixing OST file corruption

    Here’s some ways to begin fixing the problem:

    1. Remove those profiles that are not being used from the address “Control Panel > Mail > Show profiles.”
    2. Create another copy of OST file.
    3. Even if the error doesn’t get resolved, create another new profile from while using Outlook Profile Helper or manually.

    Outlook error caused by running in compatibility mode

    Outlook Error
    You might have witnessed these errors:

    Cannot open your default email folders. Information store could not be opened,”


    “Cannot start Microsoft Outlook. Cannot open the Outlook window. The server is not available. Contact your administrator if this condition persists.”


    “Cannot display the folder. File access is denied. You do not have the permission required to access the file C:Usersusernamelocalsettingsapplication datamicrosoftoutlookoutlook.ost”

    If you have enabled compatibility mode mistakenly, just disable it. If you haven’t, do not enable it for Outlook. Users typically enable it when they are required to run the troubleshoot compatibility wizard. Also, compatibility mode is not required for any version of Outlook on Vista or Windows 7 or any other Windows OS. This mode is also not needed for any application that is supported on any Windows OS or for recently released applications.

    The user can switch off compatibility mode in a 64-bit operating system by following these easy steps:

    • Switch to the mentioned address “C:Program Files (x86)Microsoft OfficeOffice XXOutlook.exe”
    • Right-click on exe and then follow up by clicking on Properties then Compatibility tab.
    • Uncheck the checkbox called “Run this program in compatibility mode” box, thereafter click Apply and OK.

    And in case, you are unable to place the Compatibility tab, follow the following steps:

    • Click on Startand search for Program Compatibility Troubleshooter.
    • Start Program Compatibility Troubleshooter; select Next option to proceed.
    • Select Outlook XX from the appeared list of programs. Following the steps of the Program Compatibility Troubleshooter.
    • Switch to the mentioned address “C:Program Files (x86)Microsoft OfficeOffice XXOutlook.exe”
    • Right-click on exe and then follow up by clicking on Properties then Compatibility tab.
    • Uncheck the checkbox called “Run this program in compatibility mode” box, thereafter click Apply and OK.

    If this issue is experienced over an Exchange email account that is configured on your Outlook, you can diagnose the error by trying the following steps:

    1. If your program is executing along with a running Windows Server and/or over a firewall, then disable the firewall and then connect it with the server directly without any firewall.
    2. If this Outlook error gets resolved, then you will be required to reconfigure your firewall to allow Exchange to sync.
    3. And if the Outlook error still persists even after disabling the firewall, create a new mail profile from Outlook. You will also need to reconfigure your account.

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    DLP Network Discover scan common errors

    I need a solution

    Hi guys

    Does anyone know if there is a list of common errors and reasons/resolutions, i’m trying to put together a simple guide for the first line support team and can only find/document issues as I come across them myself, not really ideal.

    What I have so far are:

    Access is denied – Permissions error, scan does not have the correct credentials to access the file, or additional access controls exist on the file, or AD access may have been interrupted, (try to manually access the files using the DLP scan user to see why the download failed) 

    Failed to Read – failed to read errors are generally related to files being locked and not available to be copied/downloaded

    Failed to Download – often related to permissions errors (try to manually access the files using the DLP scan user to see why the download failed) 

    No such mount exists – this is related to file reader restarts, when the file reader does not unmount the drive fully during the restart and then the scan cannot mount the drive to continue scanning.  This is a bug I have seen in the forums.

    Exception occurred during initialization. Ensure that Microsoft Outlook is configured properly (.pst files). – Outlook needs to be installed on the server doing the scan to be able to read .pst files

    Anyone had any more?



    How to Restore Emails from OST file Outlook 2013?

    MS Outlook 2013, like earlier Outlook versions, uses OST file to save a local replica of Exchange mailbox data. This file comes handy when user wishes to work on his mailbox even if Exchange isn’t available. But, it can’t be opened directly in Outlook if its parent account gets disconnected from Exchange. In such a case the OST file is called an ‘orphan’ file and extracting emails and other data from it can become a real pain.

    Although Microsoft came up with the concept of using data files to save mailbox data locally in order to make backing up and archiving more convenient, OST and PST files have in some ways complicated mailbox management; and that holds especially true for OSTs. If you access an Exchange mailbox through Outlook, a local OST file is created to save a replica of mailbox data which the user can access and work with even if the mail server isn’t available. However, the basic nature of OST files makes managing mailbox data quite tricky for users.

    The need to Restore mails from OST File

    OST files have several shortcomings because of which, users often face the need to extract emails and other data stored within these files and save them in some other format:

    • OSTs cannot be transferred between different machines. If users need to access their mailbox data saved within OST files on another machine, it cannot be done directly through a simple copy-paste mechanism.
    • If the account that originally created an OST file gets deleted from the mail server, it cannot be opened directly from within Outlook.
    • In Outlook 2013 and 2016, data locally edited and saved within critical folders like Contacts, Calendars, Sent Items, etc. is not synced with the mail server and is thus not backed up there. In the event of damage to OST file, there’s no direct way to regain access to that local data since it doesn’t exist on the server.

    Users who faced the need to extract OST file data because of any of the above-mentioned reasons make use of manual as well as automated ways to achieve it. For your reference, we’ve compiled a list of the most widely used and accepted techniques you can use to restore OST files if you’re sailing in the same boat.

    Manual techniques to Restore OST files

    In no specific order, these techniques can help you regain access to all your Exchange or other IMAP account data depending upon your exact problem scenario:

    Scenario 1: If your Exchange account is intact but OST file gets corrupted

    This is one of the most frequently encountered problems by Exchange users. OST files get damaged easily but if your Exchange profile is intact and you are in the habit of regularly syncing your local data with your server mailbox, regaining access to all your data should simply be a matter of manually creating a new OST file and downloading your mailbox data from the server again. Here are the steps:

    1. Quit all running instances of Outlook and open Control Panel
    2. Open the “Mail” option and in the ‘Mail Setup’ dialog box that opens, click on “Email Accounts”
    3. The next dialog that opens will display all your Outlook profiles / accounts. Here, click on the “Data Files” tab and choose the respective OST file from the list
    4. Now click on “Open File Location” to open the Windows Explorer window with the OST file’s location
    5. Close the ‘Account Settings’ and ‘Mail Setup’ windows
    6. In the Explorer window, create a copy (backup) of the OST file. Thereafter, right-click on it and click on “Delete”
    7. Start the Outlook application again to automatically create a new OST file for that account (doing so will download all the data from the Exchange server into the newly created OST file)

    You should remember that if you’re using Outlook 2013 / 2016, only the data residing on the mail server will be downloaded into the new OST file. This will include your emails and the folders you have manually synced with the Exchange account. Any local data will not be downloaded since it doesn’t exist on the server. To get access to any such data you will need to convert the old OST to PST format and then open it directly within Outlook. You can either use the Outlook “Import & Export wizard” to convert OST to PST or take the help of reliable software Stellar OST to PST Converter to do so (skip to last section to discover how this product can help).

    Scenario 2: If your Exchange account has been deleted or lost

    If this happens, your “orphaned” OST file will most likely become useless since you won’t be able to open it directly unless you reconnect to Exchange and re-sync it. For this you will need a unique MAPI address to act as a bridge between Outlook and the Exchange server. However if this isn’t an option, the only way to access the data contained within the orphaned OST file is to convert it to PST format using Stellar OST to PST Converter. (Here you won’t have the option to use Outlook Import Export Wizard since you’ll need to open the OST file from within Outlook and without Exchange that won’t be possible).

    Best Automated Solution to restore mails from OST file

    If the manual technique doesn’t work or if you are dealing with an orphaned OST file, converting it to PST format is a task best handled by a professional product like Stellar OST to PST Converter. The advanced software is equipped with some very powerful algorithms that allow it to convert even the most severely damaged OST files to PST format files that can be used to access all mailbox contents including emails, attachments, contacts, calendars, notes, journals, etc. This software is your best bet if you wish to perform conversion of encrypted OST files or wish to extract only selected emails from within OST files and save them in MSG, EML, RTF, HTML, or PDF formats.

    Final Thoughts…

    So should a user completely shun the usage of OST files? Well obviously that isn’t an option since OST files are the Microsoft norm for saving Exchange data locally. What is needed is for users to stay aware of the techniques they can use to regain all their mailbox data if any disaster like virus infection or accidental deletion or severe corruption befalls their OST files. Converting OST files to PST format is the best way to salvage all the data stored within them and thus, having a product like Stellar OST to PST Converter handy goes a long way.