Configure OAuth authentication between Exchange and Exchange Online organizations

Question

Upon setting auto-replies in Outlook, the teams status is not reflecting.

Following https://learn.microsoft.com/en-us/exchange/configure-oauth-authentication-between-exchange-and-exchange-online-organizations-exchange-2013-help to make sure all configurations are in place, getting below error when testing from exchange online powershell

Tryiing to figure out how to fix connectivity failure

"

Exchange Response Details:
              HTTP response message:
              Exception:
              System.Net.WebException: The remote server returned an error: (401) Unauthorized.
                 at System.Net.HttpWebRequest.GetResponse()
                 at Microsoft.Exchange.Monitoring.TestOAuthConnectivityHelper.SendExchangeOAuthRequest(ADUser user,
              String orgDomain, Uri targetUri, String& diagnosticMessage, Boolean appOnly, Boolean useCachedToken,
              Boolean reloadConfig), diagnostics: 2000005;reason="The user specified by the user-context in the token
              does not exist.";error_category="invalid_user"

ResultType  : Error
Identity    : Microsoft.Exchange.Security.OAuth.ValidationResultNodeId
IsValid     : True
ObjectState : New

Answer 1

Hi @basharat mir

Is the account you are testing syncing between your on-premises environment and Exchange Online?
401 Access denied error when you run the Test-OAuthConnectivity cmdlet

Also, I found this: Announcing Hybrid Modern Authentication for Exchange On-Premises

Regards

Shaofan

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