Wednesday, 11 November 2009

Sysprep Windows 2008 R2

Just wasted a day of my time troubleshooting an issue that was tracked back to being an issue with the Sysprep image of Windows Server 2008 R2 that I was using…


Basically it hadn’t been sysprep’d in the correct manner…


The issue I was seeing was the inability to add a domain user to a local group on a member server, the account would resolve OK but the user was not properly added.

I also received an error running the SharePoint 2010 config wizard:


An exception of type System.Security.Principal.IdentityNotMappedException was thrown.  Additional exception information: Some or all identity references could not be translated


This was generated after entering the SQL server name/DB and the Farm account credentials…


I had to throw away my DC, my SQL server and my SharePoint 2010 server…


Starting all over again :(


So, the correct sysprep method is as follows:


  1. Forget the GUI!
  2. Run (from elevated command prompt):

c:\windows\system32\sysprep\sysprep.exe /quiet /generalize /oobe /shutdown




This works fine…


-I am ignoring the spelling of “generalize” ;)




Please note: the mini-setup that runs after booting a sysprep R2 image does not prompt for Computer name, you’ll have to change this manually. I would recommend not changing the computer name in the same operation as joining a domain, change the name and reboot, then join domain and reboot. This may no longer be an issue but I remember having issues in the Windows 2000 days with doing this and these kind of practices tend to stick with me ;)


  1. Sysprep in 2008R2 has other issues like it doesn't prompt for computer name during mini-setup. we have to use MDT or some other 3rd party tool to image and deploy 2008R2.

  2. A valid point! Have updated the post to reflect this - many thanks!

  3. What a life saver this find was. We spent a few days chasing the ghost. Thanks for the post!

  4. Thanks Matt, it is really worked :)


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