Hotfix XS80E004 – For Citrix Hypervisor 8.0

Who Should Install This Hotfix?

This is a hotfix for customers running Citrix Hypervisor 8.0.

Information About this Hotfix

Component Details
Prerequisite None
Post-update tasks Restart Host*
Content live patchable** Yes
Baselines for Live Patch XS80E003
Revision History

Published on Aug 27, 2019

* If you are eligible for live patching, restart is not required to apply the functional fixes in this hotfix. However, it is required to apply microcode changes. For more information, see Issues resolved in this hotfix.
** Available to Enterprise Customers.

Issues Resolved In This Hotfix

This hotfix resolves the following issues:

  • If you forcibly shut down a VM that has an AMD MxGPU attached, or the guest OS shuts down abnormally, your Citrix Hypervisor server might experience memory corruption.
  • If you force a shutdown on a Windows VM that is in an unclean state, the Citrix Hypervisor server hosting the VM might crash.

For Sandybridge hardware, this hotfix updates the Intel microcode to the microcode-20190618 release. This microcode addresses issues described in CTX251995 – Citrix XenServer Multiple Security Updates. To apply the updated microcode you must stop and start your Citrix Hypervisor host. To check that the microcode has been correctly applied, see the advice in the security bulletin.

This hotfix also includes the following previously released hotfixes:

Installing the Hotfix

Customers should use either XenCenter or the Citrix Hypervisor Command Line Interface (CLI) to apply this hotfix. As with any software update, back up your data before applying this update. Citrix recommends updating all hosts within a pool sequentially. Upgrading of hosts should be scheduled to minimize the amount of time the pool runs in a “mixed state” where some hosts are upgraded and some are not. Running a mixed pool of updated and non-updated hosts for general operation is not supported.

Note: The attachment to this article is a zip file. It contains the hotfix update package only. Click the following link to download the source code for any modified open source components XS80E004-sources.iso. The source code is not necessary for hotfix installation: it is provided to fulfill licensing obligations.

Installing the Hotfix by using XenCenter

Choose an Installation Mechanism

There are three mechanisms to install a hotfix:

  1. Automated Updates
  2. Download update from Citrix
  3. Select update or Supplemental pack from disk

The Automated Updates feature is available for Citrix Hypervisor Premium Edition customers, or to those who have access to XenServer through their Citrix Virtual Apps and Desktops entitlement. For information about installing a hotfix using the Automated Updates feature, see the Applying Automated Updates in the Citrix Hypervisor documentation.

For information about installing a hotfix using the Download update from Citrix option, see Applying an Update to a Pool in the Citrix Hypervisor documentation.

The following section contains instructions on option (3) installing a hotfix that you have downloaded to disk:

  1. Download the hotfix to a known location on a computer that has XenCenter installed.
  2. Unzip the hotfix zip file and extract the .iso file
  3. In XenCenter, on the Tools menu, select Install Update. This displays the Install Update wizard.
  4. Read the information displayed on the Before You Start page and click Next to start the wizard.
  5. Click Browse to locate the iso file, select XS80E004.iso and then click Open.
  6. Click Next.
  7. Select the pool or hosts you wish to apply the hotfix to, and then click Next.
  8. The Install Update wizard performs a number of update prechecks, including the space available on the hosts, to ensure that the pool is in a valid configuration state. The wizard also checks whether the hosts need to be rebooted after the update is applied and displays the result.
  9. Follow the on-screen recommendations to resolve any update prechecks that have failed. If you want XenCenter to automatically resolve all failed prechecks, click Resolve All. When the prechecks have been resolved, click Next.

  10. Choose the Update Mode. Review the information displayed on the screen and select an appropriate mode.
  11. Note: If you click Cancel at this stage, the Install Update wizard reverts the changes and removes the update file from the host.

  12. Click Install update to proceed with the installation. The Install Update wizard shows the progress of the update, displaying the major operations that XenCenter performs while updating each host in the pool.
  13. When the update is applied, click Finish to close the wizard.
  14. If you chose to carry out the post-update tasks, do so now.

Installing the Hotfix by using the xe Command Line Interface

  1. Download the hotfix file to a known location.
  2. Extract the .iso file from the zip.
  3. Upload the .iso file to the Pool Master by entering the following commands:

    (Where -s is the Pool Master’s IP address or DNS name.)

    xe -s <server> -u <username> -pw <password> update-upload file-name=<filename>XS80E004.iso

    Citrix Hypervisor assigns the update file a UUID which this command prints. Note the UUID.


  4. Apply the update to all hosts in the pool, specifying the UUID of the update:

    xe update-pool-apply uuid=e803cae4-35e7-44dd-8cd5-74315f1eee63

    Alternatively, if you need to update and restart hosts in a rolling manner, you can apply the update file to an individual host by running the following:

    xe update-apply host=<host> uuid=e803cae4-35e7-44dd-8cd5-74315f1eee63

  5. Verify that the update was applied by using the update-list command.

    xe update-list -s <server> -u root -pw <password> name-label=XS80E004

    If the update is successful, the hosts field contains the UUIDs of the hosts to which this update was successfully applied. This should be a complete list of all hosts in the pool.

  6. If the hotfix is applied successfully, restart each host in the pool, starting with the master.
  7. Use the update-pool-clean command to remove the update files from all hosts in the pool. This command frees up space on shared storage and does not uninstall the update.

    xe update-pool-clean uuid=e803cae4-35e7-44dd-8cd5-74315f1eee63


Hotfix File

Component Details
Hotfix Filename XS80E004.iso
Hotfix File sha256 657bbf76ac66c4ddca6f7545cffe5eed165cbd3fac438152a0dc389a5c097c4e
Hotfix Source Filename XS80E004-sources.iso
Hotfix Source File sha256 c6efbf703b933fbed0658d28fc7411824f5cb7784c34f1605d1cb5b84e6a2c00
Hotfix Zip Filename
Hotfix Zip File sha256 87fb2340585920491efd76c63d7b353ebcefefa351495af2fb71ee5eee944924
Size of the Zip file 7.93 MB

Files Updated


More Information

For more information, see Citrix Hypervisor Documentation.

If you experience any difficulties, contact Citrix Technical Support.


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