I have a couple of user who repeatedly have this issue.
Office 365 using Outlook 365 on Windows 10
Outlook will say Needs Password in the bottom right, the password box seems to flash on the screen and disappear, giving them no where to enter the password even if they click on the "Needs Password" message in the bottom right.
To fix they have to delete the credentials from Credential Manager in Control Panel and restart the PC.
Outlook will then allow them to reenter the password.
This seems to reoccur for a few of my users every few weeks.
Anybody know what could causing it or a permanent fix?
Thanks.