Exchange Online - OAuth Connectivity Status

Monitoring Benefit

The Exchange Online OAuth Connectivity status tests verify that OAuth authentication is available for your applications that rely on this component of the Hybrid Organization configuration.

How do we verify the monitoring test results?

From the Exchange server, open the Exchange Management Shell:

Test-OAuthConnectivity -TargetUri https://outlook.office365.com/EWS -Mailbox "Your On-Premises Mailbox"

From Exchange Online, open remote PowerShell:

Test-OAuthConnectivity -TargetUri https://mail.contoso.com/ews/ -Mailbox "Your Cloud Mailbox"

Reference: Test-OAuthConnectivity examples | Microsoft Learn

From the Exchange server, open the Exchange Management Shell:

Get-OrganizationRelationship | Test-OrganizationRelationship -UserIdentity <Your On-Premises Mailbox>

From Exchange Online, open remote PowerShell:

Get-OrganizationRelationship | Test-OrganizationRelationship -UserIdentity <Your Cloud Mailbox>

Reference: Test-OrganizationRelationship examples | Microsoft Learn

Common warning or error results, and potential solutions

Review the OAuth configuration settings by opening the ENow Admin Console and selecting:

Server > Tuning Policy > Settings > Microsoft 365 > Exchange Online Hybrid Mode > OAuth Configuration Tests

For troubleshooting OAuth connectivity issues related to either Exchange or Exchange Online:

Configure OAuth authentication between Exchange and Exchange Online | Microsoft Learn

For troubleshooting issues specific to running the Test-OAuthConnectivity cmdlet:

401 Access denied when running Test-OAuthConnectivity - Exchange | Microsoft Learn