Citrix XenApp/XenDesktop 7.13 Upgrade License Server
Citrix XenApp and XenDesktop can be upgraded, but must be done in a particular order to avoid downtime.
Prepare - run site checks, backup databases, check Subscription Advantage date, close apps and console and check permissions.
Upgrade License server
Upgrade Provisioning Services servers and Target Device software
Upgrade half the Delivery Controllers
Upgrade XenApp/XenDesktop databases
Upgrade remaining Delivery Controllers
Upgrade Virtual Delivery Agents (VDA)
Update machine catalog and delivery groups
The following article goes through the steps of upgrading the Citrix License Server. It is a very straight forward process.
Insert the Citrix XenApp/XenDesktop 7.13 media into the CD-ROM drive, go to the folder x64\Licensing and launch CitrixLicensing.exe.
Select the best option for how Citrix Licensing Server will deal with Subscription Advantage renewal and click Next.
Select to allow Citrix Insight Services to collect license usage and statistics or send anonymous statistics and usage to CEIP and click Finish.