Citrix Hypervisor

Cumulative Update 1

About this release

Citrix Hypervisor 8.2 CU1 is the first Cumulative Update for the Citrix Hypervisor 8.2 Long Term Service Release (LTSR). This article provides important information about the Citrix Hypervisor 8.2 CU1 release.

Citrix Hypervisor 8.2 CU1 is available in two commercial editions:

  • Premium Edition
  • Standard Edition

Citrix Hypervisor 8.2 CU1 and its subsequent hotfixes are available only to customers with Customer Success Services.

To receive these hotfixes through XenCenter, you must also install the latest version of XenCenter and obtain a client ID. For more information, see Authenticating your XenCenter to receive updates.

Support and maintenance

For Citrix Hypervisor 8.2 LTSR, support is available until Jun 25, 2025 on the latest cumulative update.

The Citrix Hypervisor 8.2 initial release is supported until Jun 12, 2022, which is six months following the release of Citrix Hypervisor 8.2 CU1. This support includes troubleshooting of issues and, where feasible, resolution of issues through applying configuration changes or existing product updates or upgrades.

For Citrix Hypervisor 8.2 LTSR, maintenance is available until Jun 25, 2025 on the latest cumulative update. This maintenance includes both critical and functional hotfixes.

Until Jun 12, 2022, we issue critical hotfixes for both Citrix Hypervisor 8.2 initial release and Citrix Hypervisor 8.2 CU1. We issue any functional hotfixes for Citrix Hypervisor 8.2 CU1 only.

For more information about support and maintenance, see Product Lifecycle Support Policy.

Included in Citrix Hypervisor 8.2 CU1

Citrix Hypervisor 8.2 CU1 rolls-up all previously issued Citrix Hypervisor 8.2 hotfixes and simultaneously introduces new fixes for issues reported on Citrix Hypervisor 8.2. For more information, see Fixed issues in Citrix Hypervisor 8.2 CU1.

Some performance or non-functional improvements are also included. For more information, see Improvements in Citrix Hypervisor 8.2 CU1.

To minimize changes within the LTSR product, no additional features are included in Citrix Hypervisor 8.2 CU1

Improvements in Citrix Hypervisor 8.2 CU1

In addition to the rolled-up hotfixes, Citrix Hypervisor 8.2 CU1 includes some performance or non-functional improvements that are available for all licensed LTSR customers.

Support for kdump and kexec in Linux VMs

The kdump utility and kexec command are now supported on Linux VMs running on Citrix Hypervisor.

Cipher suite changes

To improve security, weaker cipher suites have been removed from the list of cipher suites that are supported for SSH communication. For information about the cipher suites that are now supported, see Communicate with Citrix Hypervisor servers and resource pools.

Improved jumbo frames support

Jumbo frames are now supported for traffic on VM networks. For more information, see Jumbo frames.

Authenticated download of updates

To provide a more secure service for hotfix downloads, XenCenter now requires that you authenticate it with Citrix to automatically download and apply hotfixes.

To receive these hotfixes through XenCenter, you must also install the latest version of XenCenter and obtain a client ID JSON file. For more information, see Authenticating your XenCenter to receive updates.

XenCenter PuTTY update

The version of PuTTY embedded in XenCenter 8.2.4 is updated to 0.76.

Changes to guest operating system support

For the full list of supported guest operating systems in Citrix Hypervisor 8.2 Cumulative Update 1, see Guest operating system support.

Important:

Support for all paravirtualized (PV) VMs was removed in Citrix Hypervisor 8.1. However, in Citrix Hypervisor 8.2 Cumulative Update 1 and later, unsupported 32-bit PV VMs are prevented from starting. Ensure that you do not have any 32-bit PV VMs in your environment before upgrading to Citrix Hypervisor 8.2 CU 1.

Added

Citrix Hypervisor 8.2 CU1 now supports the following new guests:

  • Windows Server 2022 (with the latest Citrix VM Tools for Windows)

    Note:

    At release of Citrix Hypervisor 8.2 Cumulative Update 1, Windows Server 2022 has not been validated on this platform with the Server Virtualization Validation Program (SVVP).

    Windows Server 2022 is supported for production use only with Citrix VM Tools for Windows version 9.2.1 or later installed. You can get the latest version of the Citrix VM Tools for Windows from the Citrix Hypervisor Product Download page

  • Rocky Linux 8 (Also available in Citrix Hypervisor 8.2 with latest hotfixes)
  • Gooroom 2 (Also available in Citrix Hypervisor 8.2 with latest hotfixes)

Deprecated

The following guests are deprecated in Citrix Hypervisor 8.2 CU1:

  • Windows Server 2012 R2

Removed

Citrix Hypervisor 8.2 CU1 no longer supports the following guests:

  • Windows Server 2012
  • Windows 8.1

Support for new processors

The following processors are now supported in Citrix Hypervisor 8.2 CU1:

  • Intel® Xeon® E-23xx and E-23xxG Processors (Rocket Lake)

For more information, see the Hardware Compatibility List.

Compatibility with Citrix Hypervisor 8.2 virtual appliances

You can use the Workload Balancing 8.2 and Conversion Manager 8.2 virtual appliances with your Citrix Hypervisor 8.2 CU1 pool. To use the latest appliances with Citrix Hypervisor 8.2 CU1, ensure you use the latest version of XenCenter provided with Citrix Hypervisor 8.2

For information about the version 8.2 virtual appliances, see the Citrix Hypervisor current release product documentation.

Installation options

Citrix Hypervisor 8.2 CU1 is available to download from the Citrix Hypervisor Product Download page in the following packages:

  • Citrix Hypervisor 8.2 Cumulative Update 1 ISO comprises only the fixes that make up the cumulative update. Use this ISO to apply the cumulative update to an existing installation of Citrix Hypervisor 8.2.

  • Citrix Hypervisor 8.2 Cumulative Update 1 Base Installation ISO comprises both a base Citrix Hypervisor 8.2 installation and the fixes that make up the cumulative update. Use this ISO to create a fresh installation of Citrix Hypervisor 8.2 including CU1 or to upgrade from XenServer 7.1 CU2.

Notes:

Before beginning a fresh installation, review the System Requirements and Installation.

After installation of Citrix Hypervisor 8.2 CU1, the internal product version number is shown as 8.2.1.

Upgrade and update options

You can upgrade or update to Citrix Hypervisor 8.2 CU1 from the following earlier versions:

  • Citrix Hypervisor 8.2

    Use the Citrix Hypervisor 8.2 Cumulative Update 1 ISO file to update to the latest cumulative update. For more information, see Updating.

  • XenServer 7.1 CU2

    Use the Citrix Hypervisor 8.2 Cumulative Update 1 Base Installation ISO file to upgrade to the latest release. For more information, see Upgrading.

Always update or upgrade the pool master before updating or upgrading any other servers in a pool.

If you use XenCenter to update your servers, complete the following prerequisites:

  1. Update your XenCenter installation to the latest version supplied on the Citrix Hypervisor 8.2 download page before beginning.
  2. Obtain a client ID JSON file. For more information, see Authenticating your XenCenter to receive updates.

The latest version of the Citrix VM Tools is also available to download from Citrix Hypervisor 8.2 download page. Ensure that you update the tools on all your VMs to the latest version before upgrading or updating to Citrix Hypervisor 8.2 Cumulative Update 1.

Update notes

If you use XenCenter to update your servers, the list of available updates shows both Citrix Hypervisor 8.2 CU1 and any currently released hotfixes for Citrix Hypervisor 8.2 that are not yet applied.

As Citrix Hypervisor 8.2 CU1 includes all the hotfixes released to date, applying it avoids having to install earlier released hotfixes for Citrix Hypervisor 8.2. For more information, see Fixed issues in Citrix Hypervisor 8.2 CU1.

For a period of six months after the release of Citrix Hypervisor 8.2 CU1, there might be further Citrix Hypervisor 8.2 critical hotfixes released that are not included in Citrix Hypervisor 8.2 CU1. These hotfixes will have equivalent hotfixes released for Citrix Hypervisor 8.2 CU1, if required. Customers on Citrix Hypervisor 8.2 can choose to apply the Citrix Hypervisor 8.2 hotfixes or to apply Citrix Hypervisor 8.2 CU1 and the equivalent hotfixes for Citrix Hypervisor 8.2 CU1.

If you choose to use the Automated Updates feature to install updates on Citrix Hypervisor 8.2, it is recommended to update XenCenter to the version available for Citrix Hypervisor 8.2 CU1 first. When Automated Update is selected, the Citrix Hypervisor 8.2 CU1 update and hotfixes available for Citrix Hypervisor 8.2 CU1 are applied. For more details, see Update your servers.

Optional components updated in Citrix Hypervisor 8.2 CU1

The following are new/updated optional components for the Citrix Hypervisor 8.2 CU1 release. All other optional components remain the same as those available with the Citrix Hypervisor 8.2 release.

  • XenCenter 8.2.4
  • Software Development Kit 8.2.2

Licensing

Upgrade your Citrix License Server to version 11.16 or higher in order to use all Citrix Hypervisor 8.2 licensed features.

Note:

Before upgrading to Citrix Hypervisor 8.2 Cumulative Update 1, ensure that you upgrade your Citrix License Server virtual appliance to the latest available version. Earlier versions of the Citrix License Server virtual appliance run in paravirtualized (PV) mode and are not supported on Citrix Hypervisor 8.2 Cumulative Update 1.

For more information about Citrix Hypervisor 8.2 licensing, see Licensing Overview.

Interoperability with Citrix products

Citrix Hypervisor 8.2 CU1 is interoperable with the following Citrix Virtual Apps and Desktops versions:

  • Citrix Virtual Apps and Desktops 2203
  • Citrix Virtual Apps and Desktops 2112
  • Citrix Virtual Apps and Desktops 1912 LTSR
  • Citrix Virtual Apps and Desktops orchestrated by using Citrix Cloud.

We recommend that you use this Citrix Hypervisor LTSR with a Citrix Virtual Apps and Desktops LTSR.

Citrix Hypervisor 8.2 CU1 is also supported with Citrix Provisioning 2112 and 1912 LTSR.

For more information about interoperability with other Citrix products, see the Citrix Upgrade Guide.

Localization support

The localized versions of XenCenter (Simplified Chinese and Japanese) are also available in this release.

Product documentation

To access Citrix Hypervisor 8.2 LTSR product documentation, see Citrix Hypervisor Product Documentation.