Additional team and channel-related features and issues within Microsoft Teams for business
Hi Chris,
Good day!
Thanks for posting into the Microsoft Community. We're glad to assist you.
According to your description, I understand that you are experiencing an issue where some of the Teams you are a member/owner of are not showing up on the "Teams" tab in the desktop application, even though you can see them in the Microsoft Teams Admin Center and the browser version of Teams.
Based on the troubleshooting attempts you have already made, it seems like you have already tried the basic steps to resolve the issue. Since the issue persists, it looks like the newest service issue in Teams. Please refer below information:
TM773599
Title: Some users are missing some teams and channels in the new Microsoft Teams desktop and web clients
User impact: Users are missing some teams and channels in the new Microsoft Teams desktop and web clients.
Current status: We've determined that a portion of database infrastructure that facilitates the affected teams and channels wasn't processing data requests for those teams and channels, resulting in impact. These requests were routed through alternate database infrastructure to resolve that portion of the problem and we've implemented a fix to restore Microsoft Teams channels. We're reaching out to affected users to confirm impact is remediated.
Scope of impact: Your organization is affected by this event, and some users attempting to view teams and channels in the new Microsoft Teams desktop and web clients are impacted.
Root cause: A portion of database infrastructure that facilitates the affected teams and channels wasn't processing data requests for those teams and channels, resulting in impact.
Next update by: Thursday, April 11, 2024, at 11:30 PM UTC.
Meanwhie, Teams' engineering team are working on this, please give some patience and we will inform you in here once we have the new update of this issue. And, please use Teams Web Application as a workaround teamporarily.
Again, thanks for your understanding and cooperation.
Hope you all the best!
Microsoft Community Moderator.