Over the weekend, a family member could not log into their laptop any longer. Turned out to be “a problem with Teams” that required an unscheduled update which was marked as optional. Needless to say that they never used Teams on that machine.
When the login worked partially, their files weren’t accessible because they accidentally saved it on OneDrive which now defaults to storing online only. And OneDrive was also affected by the Teams bug.
Spent a good part of the day cursing in the direction of Redmond.