Xendesktop 7.5 – delivery controller and other options grayed out (disabled) in the installer GUI


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.


About cloudray

Predominantly based around Virtualization, but will include other technology related information and anything else I find interesting and feel the need to share with you. I also use this Blog as both a place to store useful information that I think that will come in handy to me at some point in the future, and also a place to help aid my learning. I find a great way to learn about something is to research about it and then write it up in my own words. I'm Pushpal Ray, from India. As a certified VCP3/4/5 professional, I am currently working as an Independent Consultant. Over 10 years of IT-industry experience, currently focused around the Desktop Virtualization(End-User Computing). I also have extensive experience in Windows Administration, Datacenter Migration, Workload profiling & benchmarking. At my leisure, I enjoy hiking, running, photography, spend hours in my fav coffee shop & spend quality time with my wife. Occasionally, catch up with few friends for a drink!
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