“Invalid Argument EncryptedEmails.Recipient must be specified” Error in Citrix Files Outlook Plugin

Customer is unable to send Encrypted Email using the Citrix Files for Outlook plug-in, they receive the following error:

There was an error sending your message. Invalid Argument EncryptedEmails.Recipient must be specified“.


Installation of ShareFile Outlook Plug-in


The ShareFile Outlook Plug-in is now Citrix Files for Outlook. The information presented here applies to the latest version of Citrix Files for Outlook and can be referenced for previous versions of ShareFile Outlook Plug-in. To get the latest version of Citrix Files for Outlook, visit https://dl.sharefile.com/CFO.

Citrix Content Collaboration, the advanced integration layer formerly attributed to ShareFile

Already installed the plugin and looking for tips on best practices? Click here.

Known Issues

NET Framework Incompatible

For best performance, it is recommended that users download the most recent version of the .NET Framework before using the plugin.

Multiple Outlook Profiles or Emails

If you have multiple email addresses connected to the same Outlook client, the ShareFile Outlook Plugin will only send emails with ShareFile attachments via the email address listed as the default under Data Files within the Outlook client Account Settings.

Outlook Plugin and Trend Micro

Trend Micro customers may experience crashing, difficulty accessing the ShareFile Plugin, or a “fading” Outlook ribbon that results in an app crash. This may be due to high CPU usage caused by the Trend Micro Security program. Click here for information and troubleshooting steps from Trend Micro.

3rd Party Services and Add-Ins

The ShareFile Outlook Plugin is not supported with any 3rd party service or add-in and cannot be guaranteed to function properly when used in conjunction with other add-ins. This includes (but is not limited to) meta-data scrubbers, SmartVault, iTunes, Grammarly, NETDocuments, and other add-ins. If you are using an antivirus program or add-in such as Norton, Kaspersky or McAfee, please take steps to add ShareFile as an exception to your apps. Metadata Scrubbers may interfere with the ShareFile Plugin for Microsoft Outlook. It is recommended that any metadata scrubber add-ons be disabled in order for the ShareFile Plugin to function properly. Likewise, Exchange Alternatives (such as Kerio Connector) are not compatible with the ShareFile Plugin and may block the plugin from functioning correctly. ShareFile recommends disabling these add-ons.

Blank Reading Pane when reloading a remote desktop with Outlook open

To avoid this issue, minimize your Outlook before closing your remote desktop session. To fix this issue, click on another folder or adjust the reading pane size and it will display correctly.


OS Requirements
  • Windows 7 or later
.NET Requirements
  • ShareFile Plugin for Microsoft Outlook Version 4.4 and later requires Microsoft .NET Framework 4.6, however, it is recommended that users download the most recent version of the .NET Framework.
  • Once the .NET Framework has been installed, you may need to restart Microsoft Outlook and run the installation file.
Microsoft Outlook Version Requirements
ShareFile Requirements

Article Contents

Basic Install Authenticate Plugin Plugin Missing After Installation
Admin Installation Deploy via Registry Configure a Proxy Server

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Basic Installation

To download the plugin, log in to your ShareFile account and click the Apps link in the top navigation bar. Locate Outlook Plugin in the list of apps and click the Download button. Once the installation file has been downloaded, close Microsoft Outlook and run the installation file. This will install the ShareFile Plugin for the currently logged-in user. You must accept the License Agreement to continue installation.

(Please note that the ShareFile Plugin for Microsoft Outlook Versions 3.0 and later installs only for the current logged-in user. If you wish to install the plugin for all users on the PC, please refer to the Administrative Installation section below.)

Once installation is complete, open Microsoft Outlook.

Installation Location

When installing a per-user version of the OLP, the app will be installed in C:UsersUSERNAMEAppDataLocalShareFile

When installing a per-machine version of the OLP, the app will be installed in C:Program Files (or x86)ShareFile

Authenticate Your Account

You will be prompted to enter the Email Address and Password associated with your ShareFile account.

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If your email address and password are associated with more than one ShareFile account, you will be prompted to select the account you wish to link from a list. If your account is set up to accept company credentials, you will be prompted to enter them at this time.

If your company has deployed ShareFile Restricted Zones and your default zone is a Restricted Zone, then you will be prompted to authenticate with your company credentials into that zone during the configuration of the plugin. If your default zone is not a ShareFile Restricted Zone but you attempt to share a file from a Restricted Zone using the Outlook Plugin, you will also be prompted to authenticate into that zone with your company credentials.

Administrative Installation

Click here to download the MSI installer for the ShareFile Plugin for Microsoft Outlook.

There are two versions of the MSI available:

  • ShareFile_Outlook_Plug-in_AllUsers.msi (per-machine install)
  • ShareFile_Outlook_Plug-in_User.msi (per-user install)

In order to install the ShareFile plugin for all users on the PC, the appropriate version of the Installation file must be used.

If upgrading from a per-user MSI to an all-user MSI, you must first uninstall the per-user MSI. Click here for instructions on how to perform a per-machine upgrade of the ShareFile Plugin.

The all-users MSI installer does not support the Auto-Update option.

Setting Defaults

Administrators can automatically default and lock in preferences for the plugin in the Admin section of their ShareFile account, under Power Tools. Click here for information on how to configure defaults.

Deployment with custom registry keys

In an enterprise environment, the IT department can configure the plug-in for deployment through the following registry settings: HKEY_CURRENT_USERSoftwareCitrixShareFileSSO

Note: User will not be required to sign-in to the plugin at first launch if using ADFS, SAML-Integrated, and UserConfigurable0 (refer to the table below).

The following options are available:

Method (string)
  • ‘standard’: Authentication will be done with username/password entered into the plug-in options menu
  • ‘saml-basic’: Uses SAML provider to authenticate users to ShareFile using their domain (not ShareFile) username/password in the options menu.
  • ‘saml-integrated’: Uses SAML provider to authenticate users to ShareFile using their Windows credentials
  • ‘saml-forms’: Uses SAML provider to authenticate users through forms authentication to ShareFile using their domain (not ShareFile) username/password in the options menu.
  • ‘receiver’: Uses the Receiver/ FollowMeData authentication to sign a user into ShareFile
UserConfigurable (DWORD)
  • value of ‘0’ would be not configurable = no setup wizard and all options will be greyed out
  • value of ‘1’ would allow the user to configure their own settings under the options

* If UserConfigurable = 0 and Method = saml-integrated, Subdomain and ApiCP are required.

Subdomain (string): ex. ‘widgetco’ Example for if you log into ShareFile at http://widgetco.sharefile.com
ApiCP (string): ex. ‘sf-api.com’ If configuring the plugin for use with a ShareFile account on the EU control plane (e.g. https://widgetco.sharefile.eu), please specify “sf-api.eu”
AppCP (string): ex. ‘sharefile.com’ If configuring the plugin for use with a ShareFile account on the EU control plane (e.g. https://widgetco.sharefile.eu), please specify “sharefile.eu”

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Plugin Missing After Installation

If you log in to Microsoft Outlook and your ShareFile Plugin appears to be missing, there is a chance your plugin was not installed properly.

To confirm this in Microsoft Outlook: click File, then select Options and navigate to the Add-Ins list. If the ShareFile Plugin is listed as “Inactive”, you may need to enable the plugin manually.

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Proxy configuration

The ShareFile Plugin for Microsoft Outlook must be configured to work with your proxy setup. To do so, close Microsoft Outlook and run ShareFileProxyConfig.exe from C:UsersUSERNAMEAppDataLocalShareFileOutlookPlugin.

If using an outdated version of the plugin, proxy config is located at C:Program Files (x86)ShareFileOutlookPlugin or C:Program FilesShareFileOutlookPlugin.

Adjust your proxy settings, then restart Microsoft Outlook.

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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.




What is the difference between Internet Email Protect and Outlook Email Protect in SEP 14

I need a solution

1. Could you please explain why there is separate option for Outlook and Lotus email protection when all outgoing & incoming emails could be scanned through ‘Internet Email Auto-Protect’ option? Why has Symantec separated Outlook and Lotus Notes from other email Programs?

2. Does Symantec “Outlook Email Auto-Protect” option scan encrypted emails that are sent on POP3 over SSL? I have read the following article which says that Internet Email Auto-Protect option DOES NOT scan encrypted emails. I want to know if Outlook Auto-protect also behaves the same.




Solve the Windows 10 Mail App Error 0x85050041

Well Apart from Outlook, most of the users have an account on the Windows 10 mail app. While using the email application users have reported the error 0x85050041. Even if the user is not using the mail, the error still appears when generally using the computer. This disturbs the workflow. So here is the method to resolve Windows 10 Mail App 0x85050041 error code.

Cause of Windows 10 Error Code

When the mail application is not synchronized with email server it gives error message 0x85050041. To fix follow the given steps

Go to Start and then select settings

Go to Apps and then Apps & Features

Select Windows Mail App and then Advanced Option

Under Advanced option, window click on the Repair button

The Window Mail error will be removed

In this way the 0x85050041 error code will be fixed.


Error – “Cannot start Microsoft Outlook. Cannot open the Outlook Window”

Disabled Windows Search Indexing for any outlook items.


1. To resolve this issue, add the following key to the Registry to prevent indexing of any Microsoft Outlook items


Data type: REG_DWORD

Key: SoftwareMicrosoftWindowswindows SearchPreferences

Value name: PreventIndexingOutlook

Value data in Hex: 0x00000001


Restart the Outlook client and Windows Desktop Search Service.


While Outlook is still running, open Control Panel, find Index Options and open it. Then click Modify button and uncheck Microsoft Outlook from the list and click OK.



Enable the below GPO to Prevent Indexing Microsoft Office Outlook.

Computer ConfigurationAdministrative TemplatesWindows ComponentsSearchPrevent Indexing Microsoft Office Outlook.​



Avamar: Unable to open ItemPoint on Exchange 2013 with Outlook 2007 32 bits — Error: The MAPI subsystem could not be initialized.

Article Number: 499291 Article Version: 3 Article Type: Break Fix

Avamar Client for Windows

Opening ItemPoint on a newly configured Avamar client, returns a windows error popup message:

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This is an Exchange 2013 with Outlook 2007 32 bits installed.

According to Kroll support, this issue is caused by an incompatibility between Exchange 2013 and the current Outlook version installed, in this case, Outlook 32 bits.

In order to resolve this issue:

1) Apply all available service packs to the current installed version of Outlook.

NOTE: ItemPoint 8.1 doesn´t support Outlook 2007.


2) Install another version of Outlook, higher than the current one.

In this particular environment, installing Outlook 2010 32 bits was the solution to taken to get ItemPoint working as expected.


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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Outlook profile is not being saved, and is creating multiple OST files in the UPM user profile store

Outlook profile is not being saved and is creating multiple OST files in the UPM user profile store

Outlook OST is being synchronized. Every time user starts Outlook (inside of an ICA dsektop) Outlook prompts to configure the Outlook profile and creates a new OST inside of the user profile (c:users[username]App DataLocalMicrosoftOutlook) adding a index to the OST filename name (e.g. [username@[domain name]# (1), (2), (3), etc

This generates multiples OST copies in the user store AND in the local C:users[username] profile folder

Therefore end user is unable to leverage the configured Outlook OST that was brought from the user store from the previous session