When it announces that it's going to restart in 15 minutes to complete windows updates. at 10:15. And it's the server that hosts the virtual server with SIMS installed.
I had thought I had prevented disaster using this guide: http://www.redmondpie.com/how-to-sto...rting-your-pc/
and then running gpupdate /force
However, this turned out to be a false hope, as a phone call from reception to tell me that SIMS