You don’t half get strange errors when building a test environment if when you run SYSPREP’d each copy of your VM base image you forget to check the ‘generalize’ box
If you forget this, as I did, each VM has a different name but the same SID. Basically the domain/AD is completely confused as who is what. The commonest error I saw was that I could not setup application (Report Services, SP 2010 and TFS 2012) with domain service accounts. I all cases I got messages about missing rights or cannot communicate with domain controller.
The fix was to basically start again. I re-SDYSPREP’d one of the pair of boxes I had to it reset it’s SID, I stripped off what I was trying to install, re added it to the domain and installed applications again. Once this was done all was fine.