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Jump To: Support > KB > Citrix > XenServer > Hotfixes

XenServer Hotfixes, suggested installation order and post-install actions

See page last modified date at bottom

Each fix listed shows the immediate impact of applying the update:

  • no action required after installation - will have no effect on running machines
  • toolstack restart - Running machines will not be affected, but you will be temporarily disconnected in XenCenter (which will reconnect automatically after 120 seconds)
  • restart or migrate VMs - the hosts do not need rebooting, but for the hotfix to apply to the VMs, they will either needed to rebooted or live-migrated to another host which also has the hotfix on
  • reboot - the physical server will need rebooting, so VMs will need to be moved onto another server (or shutdown). If using XenCenter, it'll move the VMs around for you automatically to keep them running throughout. However, to speed things up you can move them all off the pool master yourself and update/reboot that completely (as it may require multiple reboots) before moving VMs back to it and upgrading the other servers
  • reboot or live patch - as above, but if you have XenServer Enterprise rights, the patch will be done live without requiring a reboot.
  • upgrade VM tools - The XenServer guest tools should be upgraded as soon as convenient, but machines will continue to work without. Do NOT upgrade tools in VMs that are provisioned

N.B. XenServer fixes for 7.1 and later are provided as .iso files rather than .xsupdate. They are applied in the same way except that you cannot double-click on the fix file to automatically open it in XenCenter.

N.B. (2) XenServer 7.1 and later supports live patching if you have XenServer Enterprise licences or XenServer for XenDesktop rights. This applies the patch without requiring a reboot. Some patches can only be applied without a reboot if a specific earlier patch is already installed.

N.B. (3) The latest security patches will stop NetBSD VMs from booting. To remedy this, you must run the following on each host before rebooting:
/opt/xensource/libexec/xen-cmdline --set-xen pv-linear-pt=true

XenCenter (all versions of XenServer)

Use latest version of XenCenter to manage all XenServer pool regardless of version

XenServer 7.2

  • XS72E003 - no action required after installation
  • XS72E005 - reboot or live patch if XS72E002 installed
  • XS72E010 - reboot
  • XS72E012 - reboot or live patch if XS72E008 or XS72E009 installed

XenServer 7.1 CU1

XenServer 7.1 is a Long Term Support Release (LTSR) offering support for 10 years, but this requires maintaining Customer Success Services (CSS, previously known as Software Maintenance). Without CSS, there will no updates for 7.1 after the end of 2017. If you do not have CSS, you should use the Current Release (7.2 at the time of writing). You may not downgrade from 7.2 to 7.1 CU1.

XenServer 7.1

N.B. Please read notes on XenServer 7.1 Cumulative Update 1 for future update strategy

  • XS71E001 - no action required after installation
  • XS71E005 - restart or migrate VMs
  • XS71E009 - toolstack restart
  • XS71E010 - no action required after installation
  • XS71E014 - reboot
  • XS71E018 - no action required after installation
  • XS71E019 - reboot or live patch if XS71E016 or XS71E017 installed

XenServer 7.0 and earlier

We no longer maintain a list of hotfixes for 7.0 and earlier as we recommend all customers upgrade to 7.1 LTSR or 7.2

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Page last modified on December 06, 2017, at 11:44 AM by sborrill