Hi King Arthur,
The error message for this test as below:
An HTTP 401 Unauthorized response was received from the remote Unknown server. This is usually the result of an incorrect username or password. If you are attempting to log onto an Office 365 service, ensure you are using your full User Principal Name (UPN).
According to this error message, this test failed due to the wrong user name or password you typed in when you run this test. Please correct the user name or password and do the test again.
Moreover, I would like to confirm with you the following information:
1.Have you deployed ADFS proxy server in your SSO environment?
2.Did you run the Office 365 Desktop Setup app on your home computer?
Thanks,
Jolin Qiao