It's been a while since I posted, but we bumped into something completely batshit crazy at work that I just had to share.
One of my colleagues was setting up a new computer, and was unable to RDP into the new build. He kept getting the error message "Your session ended because there was a data encryption error. If this keeps happening, ask your admin or tech support for help."
We'd never experienced this error before, and - although the internet knew about it - there were not very many helpful hits …