Currently on an offline machine I cannot use VS 2013, I get a modal with the only option being "Exit Visual Studio".
Last time I used VS was 22/12/2013.
This is really fucked IMHO.
My 2013 Pro from MSDN doesn't do anything like that.
Edit: I just span up a copy fo the virtual machine snapshot and it didn't say anything even though that had been technically not used and has no network connection.
The fact they say it expires in "Int32.MaxValue" days is worrisome. But hey those stale licenses, we gotta fuck those guys up...
Yeah that sucks. I wish you luck with that and will keep my eyes peeled for issues here. We gave 50 seats so trouble like this would be nice to avoid.