Robert MacLean
11 August 2010
At the Visual Studio & TFS event we had a few machines complaining that the Test Manager license was invalid and a new one was needed. Those same machines also said Visual Studio’s license was corrupted and that Visual Studio needed a re-install.
To make this more odd, we were using virtual machines so every machine was identical yet only some machines had this problem.
The cause was the host OS date was wrong (the year was 2008) and so the virtual machines were set to 2008. In the eyes of the virtual machine this meant that the license was installed magically in the future.
We turned off the VM, deleted the state, fixed the date and started again and it was solved!