Forum Discussion

Copper Contributor

Mar 06, 2026

Bizarre Yahoo Mail Connection Problem

I have Outlook 365 installed on two Windows 11 Pro PCs. Latest updates. On one PC, I can use Outlook 365 as a mail client for my Yahoo mail account using the "old" interface, No issues. On the ot...

Hornblower409

Iron Contributor

Mar 07, 2026

https://support.microsoft.com/en-us/office/unable-to-add-a-gmail-account-to-classic-outlook-4d9530c5-3f40-4e6d-9b45-4477f160828f

The article title is "Unable to add a Gmail account ..." but I have seen reports that this bug can also cause any working IMAP account to fail. The fix is the same - Clear the Windows Credentials.