Recently, when I was trying out the fresh & shiny 7.5 version of Xendesktop, I stumbled on this very basic yet worth highlighting moment, to avoid unnecessary troubleshooting and for a faster POC (especially for first-timers / beginners). This comes at the very beginning, when you run the XenDesktop installer on a windows 2008 server (physical or virtual). After few seconds, once the XenDesktop User-interface window pops up click on the ‘Start’ button as shown below:
The next screen after you click ‘Start’, you may observe that all the options are grayed out EXCEPT the following:
- Virtual Delivery Agent for Windows Desktop OS
- Citrix Studio
The Windows Server 2008 R2 Standard (or otherwise) OS is not patched with Service Pack 1. To validate this claim, on the same server where you are installing the XenDesktop, simply go to start > run > type winver and hit enter. Alternatively, type msinfo32 , hit enter and the system summary window should show the build version as shown in the screenshot below:
If the build version just reads as ‘7600’ or 6.1.7600, then this edition of 2008 does not have Service Pack 1 (SP1) installed. The minimum requirement for XenDesktop to run on Windows 2008 R2 is SP1.
Go ahead and run windows update or download Service Pack1 (windows6.1-KB976932-X64.exe choose x86 if otherwise) from the microsoft website: http://www.microsoft.com/en-us/download/details.aspx?id=5842 OR Service Pack 2 from the following: http://www.microsoft.com/en-us/download/details.aspx?id=17669
Note, you may have to reboot the server 1-2 times before Service Pack is installed. Once SP1 installed, validate the same by opening winver window as mentioned above and you should see the build version changed to 6.1.7601 or 7601.
Re-run the Xendesktop installer now and you can see all the options are enabled and voila!
On a side note, this may not be valid anymore as windows 2008 is going to be phased out soon and Windows 2012 will be the primary server for any deployment scenarios.