This morning when I first started working in Tridion (by trying to do a simple search for a page), I got this error:
"Unable to load config file cm_cnfg_git : Unable to decrypt data"
And in general, Tridion CM Explorer seems to be missing my schemas, components, etc.
Unfortunately, I have no access to any logs or event viewer, so I am hoping this is a common issue that someone has run into.