teams可以登录却发不出消息，对话框右下角圆圈的勾无法打上，是什么原因

Hello ElwynLee,

Thank you for posting into the forum community.

Regarding your mentioned description. we checked and we found that this issue was posted to the Service Health Dashboard (SHD) as incident TM402718 Ended a 2022-7-21, 1:14 PM(UTC). User Impact: Users may be unable to access Microsoft Teams.

Scope of impact: This issue may potentially affect any user attempting to utilize the Microsoft Teams service.

Tenant administrators can view current information and updates on SHD at the link here https://portal.office.com/AdminPortal/Home#/servicehealth

For affected customers to easily identify the information here, this thread will be closed. We will update to the thread once the issue is resolved or you can obtain the most recent information from SHD.

Your patience and cooperation are highly appreciated.

Sincerely,
Tommy

Hello ElwynLee,

Good day!

This issue was posted to the Service Health Dashboard (SHD) as incident TM402718. Start time: **** Thursday, July 21, 2022, at 1:05 AM UTC.

User Impact: Users may be unable to access Microsoft Teams.

More info: Reported impact scenarios include, but may not be limited to, the inability to access to the service, initiate messaging, calling, and meetings.

The desktop app may sign in successfully, though all functionalities may be down, and users may see the following message: “We ran into a problem. Reconnecting…” Users leveraging the web client may see a message stating “Operation failed with unexpected error.”

We've performed targeted restarts and recommend that users restart their client if they are experiencing failures when attempting to create or join calls, meetings, or send chats.

Current status: Service availability has mostly recovered with only a few service features still requiring attention. We'll continue to monitor the service as new regions enter business hours to ensure the service health does not fluctuate while the remaining actions are completed.

Scope of impact: This issue may potentially affect any user attempting to utilize the Microsoft Teams service.

Tenant administrators can view current information and updates on SHD at the link here https://portal.office.com/AdminPortal/Home#/servicehealth

Your patience and cooperation are highly appreciated.

Sincerely,

Tommy | Microsoft Community Moderator