Access Denied in New Outlook

Same issue popped up on the new outlook right after I change my outlook password on my home account. Relogging ect. all didnt solve it. Reverting to the solid old outlook solved it for now. There must be somthing in the validation of account access in the flow that simply isnt working and letting access come through. I dont have the issue on a corporate account using the new outlook and after changing a password there.

rubbish outloot 365, same issues as others

They really need to sort their ****! I am getting really sick of this BS, i can't even add my seccond email on my pc because verification **** failed(new security system?) because i never had that nonsense. Isn't it the "acces denied" **** then there is this problem again.. comon fix your **** microsoft!

Have the same problem starting today. Never had this before. Using Windows 11 and new Outlook for years (even in beta).

I started experiencing this problem today. It appears to have been the result of an automated Windows Update (for Windows 10).

As many have already stated, the problem seems to be tied to New Outlook. If I revert back to Old Outlook, it works perfectly fine, but as soon as I try to enable New Outlook again, the problem re-appears.

I've been using New Outlook for over a year, so it's quite surprising to be affected out of the blue. Perhaps some Windows 11-specific security changes were retroactively pushed out for Windows 10 as well? It seems that most users in this thread are running Windows 11.

Another alternative that works for me is to use the browser e-mail services instead. So if you truly need to access your mailbox asap, this could be the way (if reverting back to Old Outlook doesn't cut it, that is).