I'm resposting from this thread to hopefully create more attention for this problem: https://answers.microsoft.com/en-us/outlook_com/forum/outlk_win-outtop_new-outsub_ofb/outlook-error-message-someh...
I am seeing the same thing. If you delete their office tokens and move them to a new host the problem goes away and then they can log on to any other host without issues and least for a few days then the process starts all over again. But it does not affect everyone, just random user and not always the same one. It is bananas :banana: