Microsoft 365 Alert – Service Degradation – Microsoft Teams – Users may be unable to upload files or photos in some group chats from the Microsoft Teams desktop and web clients– ONGOING

21/02/2023 16:20:00 PM (GMT)

NHSmail Reference : INC34302688

Microsoft Reference : TM495255

Issue Status : ONGOING

Issue Description : Users may be unable to upload files or photos in some group chats from the Microsoft Teams desktop and web clients.

More Information : Users may only encounter impact when uploading files or photos to group chats larger than 25 users with different organization policies applied e.g. External users. Affected users may receive an error which states, “Failed when sending.”

As a workaround, users may be able to upload the file or photo to OneDrive for Business and share the file link to users of the group chat.

Current Update : 14/03/2023 08:04:00 AM – Microsoft have initiated the deployment of the fix and expect by the end of April 2023 that the fix to have reached all the affected environments.

Scope of impact : Impact is specific to any user attempting to upload files or photos to group chats larger than 25 users with different organization policies applied.

Root cause : A recent standard service code migration inadvertently contains a regression, in the functionality that users” file identifiers are searched and access links are generated, resulting in files or photos uploaded to group chats larger than 25 users with different organization policies to fail.

Next update by : Thursday, March 23, 2023, at 9:30 AM