I have a customer who's had this issue for several weeks now. He initially got it on his X1 Carbon, so we re-installed that from scratch. During the time we had it in our shop he used his Surface Pro which is set up exactly the same way, and that went from
working fine to being the same way as the X1 Carbon. So whe did a clean install on that as well, and got the issue back on the X1 Carbon.
We have since bought him a new computer (think he wanted one anyways) and after using it for a day aprox, the issue is back on that as well...
The issue he's facing is Outlook constantly asking for login credentials for his three email accounts (two 365 accounts and one Hotmail) but he also has other issues such as Chrome stopping the sync of settings to his g-mail account, Adobe Acrobat loosing
it's activation, digital bank identification turning invalid, login to the financial services he uses online stops working because his machine is no longer validated and some other issues I can't even remember...
We also now have som other customers reporting at least very similar issues, so it must clearly be Microsoft who are causing them.
I have had it up to here with this issue to the point I get a stommach ache as soon as I see him calling in.
So, Microsoft, get your **** together please!!!