Hi, after looking for a good MS forum for a while this one looks like it will be the best one. Hopefully someone can help me with this issue. Where I work we have 1 licensed copy of SBS 2003 R2 installed on our domain server. On that server I was hoping to install a virtual machine of the same OS configured exactly the same way to test software, Windows Udpates, etc. in (about 2 weeks ago some Windows Updates FUBARed our server and we had to format/reinstall). Anyway, I'm using VirtualBox and installed SBS 2003 R2 using the same key that it is installed on the physical server with. When the activation wizard comes up it says it can't contact the licensing server as usual so I called and got the inhumanly long key but it says invalid. I would think that it is perfectly fine to run the same OS on the same computer twice...is this not the case? Basically, do I have to buy another copy of SBS 2003 R2 to run on my virtual machine? Thanks.