How to fix error code 50126 when adding personal account to Outlook Windows application?

Question

I cannot add a personal account (with personal domain) to local Outlook Windows application.

This is a Microsoft365 Family subscription and the domain is hosted at Godaddy.

When I use an outlook.com alias for the same account, Outlook says the account is added, but it's not.

Does Outlook think my personal account is a Work or School account? Error code 50126 seems ADFS related which I am not using.

I already deleted all Windows Account cached credentials related to this account in Credential Manager.

Has somebody seen this behaviour before and have a solution for this?

Note: I can login into all Microsoft web services.

Thanks in advance,

Stefan.

Answer 1

>>

That would only be logical if you are trying to sign in using a work account.

Is the address listed as a work or school account in Windows settings > accounts -look under work or school.

<<

Outlook never gave me an option to choose between Work or Personal and it was not clear to me until a few days ago.

I removed my domain on the "business" side yesterday. Then I found out that I could not leave the "mydomain" domain on my computer (because it did not exist anymore... duh). Next I followed this thread: https://answers.microsoft.com/en-us/windows/forum/all/removing-work-or-school-account-when-this-pc-isnt/b935af05-b76a-4be2-8301-c81a0644cbbb resulting in executing script "WPJCleanUp.cmd" from https://learn.microsoft.com/en-us/office/troubleshoot/activation/reset-office-365-proplus-activation-state#method2

Finally after removing the Outlook profile and creating another I was able to add the problematic account!

But... now I cannot add other personal accounts I previously had no problems with.

Outlook gives error "Something went wrong [2400]". I think I will close this thread and try to fix that error separately.

@Diane: Thanks a lot for all your support! Keep up the good work.

Regards, Stefan

Answer 2

You're welcome!