O365 error: The WinRM client received an HTTP status code of 403 from the remote WS-Management service

You may receive this error on o365 Test, Discovery or Sync. The full text of this error may read:

“Powershell Error | Connecting to remote server outlook.office365.com failed with the following error message : The WinRM client received an HTTP status code of 403 from the remote WS-Management service. For more information, see the about_Remote_Troubleshooting Help topic.”

• Review the UnitySync Office 365 login requirements. Confirm your login format is correct.

• Review the Web Server Configuration white paper. Confirm all settings in your IIS are exactly as outlined.