Unable to complete the Microsoft Teams Application Configuration.

Article: 100052616
Last Published: 2025-08-20
Ratings: 1 0
Product(s): Merge1

Problem

The configuration of the Microsoft Teams Connector is unable to proceed beyond the configuration of the Source tab.

Note: It has been confirmed that the information below is correct:

  • X509 Certificate Thumbprint
  • Application ID
  • Application Secret/Key

When hitting the 'Next' button the login to Microsoft Online is connected and the permissions requested for the Organization, but the Connector configuration just returns to the Source tab and the wizard is unable to proceed further. 

 

Error Message

There is no error displayed in the User interface. However, the wizard is stuck in an endless loop until the connector is exited. 

Review of the Merge1 logs show the following:

2022-03-03 16:51:01,873 [16] INFO  Merge1.Portal.Controllers.ConfigurationController - OAuthCallback started...

2022-03-03 16:51:01,873 [16] INFO  Merge1.Portal.Controllers.ConfigurationController - State: ''

2022-03-03 16:51:01,873 [16] ERROR Merge1.Portal.Controllers.ConfigurationController - Can't find current connector.

2022-03-03 16:51:01,877 [16] ERROR Merge1.Portal.Controllers.ConfigurationController - Error on OAuthCallback. UserID=0, RequestRawURL=/Configuration/OAuthCallback?admin_consent=True&tenant=788b1984-3887-4f80-b53d-2b98d513f61b

System.InvalidOperationException: Unexpected error, connector should not be null at Merge1.Portal.Controllers.ConfigurationController.OAuthCallback()

2022-03-03 16:51:01,878 [16] INFO  Merge1.Portal.Controllers.ConfigurationController - Ending OAuthCallback...

 

Cause

This issue can be caused when the Admin Console is being accessed via a different URL than what was configured during application registration for the Redirect URI

 

For Example: 

The Admin Console is being accessed via URL https://192.168.2.107/Configuration.

 

The Redirect URI configured in Azure Active Directory during application registration is using https://MergeSRV.Merge1.com/Configuration.

 

Solution

To resolve this issue access the Admin Console using the same URL that is configured in the Redirect URI during application registration in Azure. 

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