Error occurred while writing report log: The system detected

Weird error… on a couple of boxes we get this:

Error occurred while writing report log: The system detected a possible attempt to compromise security. Please ensure that you can contact the server that authenticated you.
(System.IO.IOException)

When trying to look at the log.

This means those boxes ran into that error when they tried to write the log file to the repository. We then stick that error into the database with the report metadata so you at least know why the slave couldn’t write the report. It could maybe be related to the user account that those slaves are running as:
social.technet.microsoft.com/For … on-offline