failed to send

Glenn Maxwell 9,661 Reputation points

One of my user lets say user1 is unable to send message on teams to user2, and user2 is also unable to send message on teams to user1.they are getting error failed to send. This is happening between these two users, they are able to send message to other users without any issue. Please guide me

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Microsoft Teams
A Microsoft customizable chat-based workspace.
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Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
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Accepted answer
  1. LiweiTian-MSFT 11,150 Reputation points Microsoft Vendor

    Hi @Glenn Maxwell

    Could you please tell me:

    Did the two users also encounter the same problem on the web client?

    Are these two users users within the organization or guest or external users?

    If the issue only occurs on the desktop client, ask both users to try clearing the cache or to see if Teams is not updated to the latest version.

    a.Clear cache:

    User's image

    b.Check for update:

    User's image

    As an alternative solution, you could create a group chat with you and the two users and then you log out of that group chat, which would create an alternate 1v1 chat for the two users.

    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.

3 additional answers

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  1. Amit Singh 4,761 Reputation points

    Users may not be able to send messages to one another due to an issue with the Teams service. If there are any known issues, you can view the Team's service status page to find out.

    You might attempt the following additional troubleshooting steps:

    • Restart Teams: Restarting Teams can occasionally resolve message-sending issues.
    • Clear Teams cache: In some cases, message sending issues might be resolved by clearing the Teams cache.
    • Reinstalling Teams: is an option in case all else fails.
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  2. Glenn Maxwell 9,661 Reputation points

    Microsoft PG team is working on this.

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  3. Tobias Jessen 0 Reputation points

    We have the same problem here. Failure is in Desktop, WebApp and mobile App.

    Are there any solutions available?

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