Teams Webhook Incoming Connectors 2025: Connector name is not displayed/tagged on messages. Shows it as "unkown user"

Question

Teams Webhook Incoming Connectors 2025: Connector name is not displayed/tagged on messages. Shows it as "unkown user"

Parvathapu, Venkat 0

Hello ,

After the webhook connector URLs were updated to latest security enhancement in 2025, all the cards in teams channels with integration to incoming webhook URLs (updated) no longer display the

connector name in the card tag/title/top. Instead it shows "unknown user" in its place.

Is this a known bug ? are there fixes or workarounds available ? Please guide.

thanks

Venkat

Prasad-MSFT 9,331 Reputation points Microsoft External Staff Moderator

2025-08-12T05:37:39.5566667+00:00

This seems to be by design after the security update. However, there is currently no official Microsoft documentation that explicitly states this behaviour.

We will check this internally with engineering team again and will update you accordingly.

1 answer

Your answer

Prasad-MSFT 9,331 Reputation points Microsoft External Staff Moderator

2025-08-12T05:37:39.5566667+00:00

This seems to be by design after the security update. However, there is currently no official Microsoft documentation that explicitly states this behaviour.

We will check this internally with engineering team again and will update you accordingly.

Answer 1

Hi @Parvathapu, Venkat
Thank you for posting your question in the Microsoft Q&A forum.
We sincerely apologize for the inconvenience you've experienced. The issue involving unknown user appearing in Teams cards after updating webhook URLs is a known issue and is currently being investigated. Unfortunately, there is no official fix or workaround has been released for this issue yet.
As forum moderators, we don’t have access to the detailed system needed to troubleshoot this effectively due to privacy and security constraints. We recommend contacting Microsoft Support directly, as they are best equipped to address and resolve this type of issue efficiently.
Here's what you should do to:
-Report this issue in Microsoft Teams
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-Contact your Global Admin in your organization to ask them submit a support request in Microsoft 365 admin center.
We hope this information is helpful and appreciate your understanding.

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.

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Teams Webhook Incoming Connectors 2025: Connector name is not displayed/tagged on messages. Shows it as "unkown user"

1 answer

Your answer