Recently we've been migrated from ADFS to PTA with SSSO enabled.
It does the job perfectly, however, I was unable to login with my onmicrosoft.com account afterwards, which is Global Administrator.
My colleague changed my domain to our custom domain and then I was able to login. When I changed it back to the xxx.onmicrosoft.com domain, I got the following:
cmdlet Invoke-PassthroughAuthOnPremLogonTroubleshooter at command pipeline position 1
Supply values for the following parameters:
Trying to log on using credentials firstname.lastname@example.org
Logon failed with error code: 1326
Details: The user name or password is incorrect
When I change it back to the custom domain name, with the same password, I'm able to login.
Can someone explain this to me?