Learn the essential steps to resolve Direct Guest Join issues in Microsoft Teams Rooms by configuring calendar processing for the room mailbox. Ensure seamless third-party meeting integration. To resolve Direct Guest Join (DGJ) failures in Microsoft Teams Rooms for Windows, configure calendar processing for the room mailbox (Option C). This ensures the device can access third-party meeting URLs embedded in calendar invites.
Question
You have a Microsoft Teams Rooms for Windows device.
Users report that Direct Guest Join fails from the device. The calendar appears on the device, but the URL link to join third-party meetings fails to work.
You need to ensure that Direct Guest Join works on the device.
What should you configure?
Select only one answer.
A. a meeting policy
B. an XML file to update the device settings
C. calendar processing for the room mailbox
D. meeting settings
Answer
C. calendar processing for the room mailbox
Explanation
For a Teams Rooms device to process calendar invites that include third-party platforms, you must ensure that calendar processing is enabled for the room mailbox.
Key Configuration Steps
Enable External Meeting Processing
Use Exchange Online PowerShell to set ProcessExternalMeetingMessages = $true for the room mailbox. This allows the mailbox to accept external meeting invites and retain critical URL data.
Preserve Meeting Body Content
Ensure calendar processing rules do not delete meeting details:
Set-CalendarProcessing -Identity "RoomMailbox" -DeleteComments $false -DeleteSubject $false
This prevents stripping of third-party URLs from forwarded invites.
Adjust Conflict Handling
Enable back-to-back meetings by setting:
Set-CalendarProcessing -AllowConflicts $true
This prevents scheduling conflicts from blocking DGJ2.
Why Other Options Are Incorrect
A. Meeting Policy: Controls Teams meeting features (e.g., recording) but doesn’t affect calendar URL processing.
B. XML File: Manages device-specific settings (e.g., UI themes), not calendar invite handling.
D. Meeting Settings: Refers to in-meeting options (e.g., lobby rules), unrelated to calendar data retention.
By configuring the room mailbox’s calendar processing, you address the root cause of URL extraction failures, enabling seamless DGJ functionality.
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