Hi CJ4400,
To turn off SSO for the specific domain in Office 365, we need to perform the following steps on the ADFS server to convert the domain from federated to standard:
- Log into the ADFS server as an local enterprise admin.
- Connect PowerShell to Office 365 by referring to: http://technet.microsoft.com/library/jj151815.aspx using the backup Office 365 admin credential (user@domain.onmicrosoft.com).
- Type: Convert-MSOLDomainToStandard –DomainName contoso.com -SkipUserConversion $false -PasswordFile c:\userpasswords.txt to convert the domain (please change the domain name in the script).
- The user can then log into Office 365 via Office 365 sites instead of the on-premises AD.
- If you want to re-enable SSO, type: Convert-MsolDomainToFederated -DomainName contoso.com (please change the domain name in the script).