Failed to send messages to teams users

Surya kumar 340 Reputation points


I am having an issue where

  1. I am unable to send messages to few teams users and their teams status is showing unknown for complete day though they are available.

Getting a warning as "Failed to send", when tried to send a message
Failed to send.jpeg

  1. Owners of M365 team were not able to add these affected users. Though they are having owner control, yet they are getting message as "you aren't authorized"

We have checked SIP address and everything is fine.

Any resolution steps are greatly appreciated

A suite of Microsoft productivity software that supports common business tasks, including word processing, email, presentations, and data management and analysis.
1,340 questions
Microsoft Teams
Microsoft Teams
A Microsoft customizable chat-based workspace.
9,199 questions
0 comments No comments
{count} votes

1 answer

Sort by: Most helpful
  1. LiweiTian-MSFT 14,940 Reputation points Microsoft Vendor

    Hi @Surya kumar

    Could you please tell me:

    Are these users created within your organization or are they external or guest users?

    If these users were created within your organization, please contact your administrator to check on the M365 Admin center whether these users have been deleted or have been assigned appropriate Teams licenses.

    User's image

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.