Hello Ian,
My Name is Chander, a Microsoft Independent Advisor and a fellow Windows 10 user like you. I hope I can help you on your concern.
Please try these steps -
- search credentials manager in start.
- click windows credentials.
- Delete all the credentials from there.
- relaunch outlook, enter password and check the box remember password and see if that helps?
If that does not help try creating this registy key -
HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover
New Dword - ExcludeExplicitO365Endpoint and value of 1.
Ref - https://kb.intermedia.net/Article/39713
Let me know if you have any questions or concerns.
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.