Microsoft 365 Alert – Service Degradation – Microsoft Teams – Some users’ new meetings created in the Outlook desktop client may automatically include Microsoft Teams meetings – RESOLVED

25/08/2023 08:37:00 AM (GMT)

NHSmail Reference : INC37866742

Microsoft Reference : TM670454

Issue Status : RESOLVED

Issue Description : Users’ new meetings created in the Outlook desktop client may automatically include Microsoft Teams meetings.

More info : Impact is specific to the Microsoft Teams meeting add-in for the Outlook desktop client build versions 1.0.23125 and above.

Impact occurs despite users unchecking “Add online meeting to all meetings” in Outlook Calendar settings. Users can also disable the add-in to avoid this issue.

While Microsoft are working to remediate this impact, affected users can create non-Microsoft Teams meetings using the following steps:

1. Access the New Meeting dropdown in the Calendar ribbon of Outlook.

2. Select the New meeting request option in the menu by right clicking on Outlook calendar.

Final Update : 21/09/2023 08:47:00 AM – Microsoft confirmed that the fix has completed deployment throughout the affected environments, and after monitoring the service, they have verified that the fix has successfully remediated the problem.

Scope of impact : Users leveraging the Microsoft Teams meeting add-in for the Outlook desktop client build versions 1.0.23125 and above and attempting to create new meetings in the Outlook desktop client may be affected.

Root cause : Some recent changes intended to optimize the Microsoft Teams meeting add-in for the Outlook desktop client interacted negatively with the code path leveraged in specific older Outlook desktop versions, subsequently resulting in impact.

Next steps : Microsoft are investigating how the Microsoft Teams meeting add-in optimizations for the Outlook desktop client interacted negatively with the code path leveraged in specific older Outlook desktop versions to prevent this problem from happening again.