I am currently using DirSync to keep my Office 365 and on-premise AD replicated and wanted to add SSO to my environment.
I followed the instructions to setup ADFS and Office 365 SSO, but it did not work.
It does redirect, but fails at some point.
I ran the https://www.testconnectivity.microsoft.com/
and it had a single exclamation point.
So I ended up wanting to revert back.
So I ran this command Set-MSOLDomainAuthenticati
on -Authentication Managed -DomainName <federated domain name>
I no longer see Office 365 in the Trust Relationship of ADFS.
Still when I go to the portal it is redirecting me.