New Diagnostic: Microsoft Teams Shared Channels now available in MRCA

We're excited to release another new diagnostic to the MRCA for troubleshooting issues related to Teams Shared channels. Thanks to RuiTabaresMsft who has done it again this time bringing you a comprehensive Microsoft Remote Connectivity Analyzer diagnostic for Shared channels.

To access the customer facing diagnostic, navigate to Microsoft Remote Connectivity Analyzer, select Microsoft Teams, then click on the “Teams Shared Channel Add Member”.



Since the release of Shared channels on Teams, one of the common trends reported is the issue related to adding internal and external users to channels. This involves configurations on Teams policies, O365 groups, and Entra B2B Direct Connect, along with additional prerequisites. We discuss the configuration and troubleshooting options in the following article: Collaborate with external participants in a shared channel

This new diagnostic will help you troubleshoot and test if you meet requirements for an internal or external user from outside tenant could be added to a shared channel including Share a channel with People and Collaborate with external participants in a channel.

At a high level the test checks a few things:

• Checking the prerequisites for user to be add a member into a shared channel.
• Validates that the user can generate an authentication token in Microsoft Teams.
• Verifies that the specified mailbox is supported for the intended operation.
• Retrieves the user's backend settings which includes configuration settings and preferences associated with the user in Microsoft Teams.
• Validates the Teams and channel policies related to shared channels.
• Validates the shared channel URI, retrieves the channel thread, and checks connectivity to chat services.
• Validates that the group has the AllowToAddGuests setting enabled.
• Validates that the tenant group settings for the AllowToAddGuests setting is enabled.
• Retrieves the tenant ID associated with the external user.
• Validates the cross-tenant access policies (XTAP) to ensure that they permit B2B direct collaboration.
• Performs a cross-tenant access policy (XTAP) search.

Please try the new diagnostic if you're having trouble adding members or sharing a shared channel and let us know if it helped.

As always, we welcome your comments, feedback, and questions. Got an idea for a new diagnostic? Issues with this one? Let us know!

Thanks!
Microsoft Teams Support