Microsoft 365 Alert – Service Degradation – Microsoft Teams – Users may be unable to see video in the new Microsoft Teams on Windows devices – RESOLVED

Announcements Habiba Tabasum

09/02/2024 09:10:00 AM

NHSmail Reference: INC41332892

Microsoft Reference: TM714175

Issue Status: RESOLVED

Issue Description: Users may be unable to see video in the new Microsoft Teams on Windows devices.

More info: The impact is specific to Windows devices that are running on some Windows versions, such as versions N and KN, where a specific Windows media component (mfplat.dll) isn’t present. Affected users may see no video where the video is supposed to be displayed.

To bypass the issue before the fix is fully deployed, affected users can follow the instructions in this link to install the Media Feature Pack: https://www.microsoft.com/en-us/software-download/mediafeaturepack

Final Update: 21/05/2024 09:00:00 AM – Microsoft have completed deployment of the fix to the impacted service environments, and their service health telemetry has confirmed that impact is remediated.

Scope of impact: This event may impact any users who attempt to view video in the new Microsoft Teams.

Root cause: A specific Windows media component (mfplat.dll) isn’t present in some Windows versions, such as versions N and KN, which is causing the impact in the new Microsoft Teams on Windows devices that are running those versions.

Next steps: Microsoft are reviewing their Microsoft Teams update and maintenance procedures pertaining to Teams interactions with the Windows media components required for functionality to prevent similar future impact.