Microsoft Teams Adds Option to Report Messages Wrongly Marked as Dangerous

Sometimes Microsoft Teams blocks a message and calls it "unsafe" or "dangerous," even though the message is fine. This is called a false positive. Now Microsoft has some new capability to allow users to report false positives. Here is what it will do:

• Clicking on a message in Teams will let you select, "Report this message."
• Then you will need to choose, "Not a security concern if you believe it was blocked erroneously."
• This feature will work on Windows, Mac, Web, iPhone, and Android.
• It is available to organizations that have Microsoft Defender for Office 365 Plan 2 or Microsoft Defender XDR.
• It needs to be enabled by your admin in Teams Admin Center and Defender portal interfaces.
• Microsoft is planning to have this available by end of November 2025 for everyone.

What does this help with?​

People run into issues at times when a normal link files is just blocked for no reason. This new feature will:

• Save time
• Reduce frustration
• Help Microsoft improve their threat detection
• Lead to fewer mistakes in the future

When users report incorrect blocks, Microsoft learns and improves their accuracy.

How to enable (for admins)​

Admins will need to enable the feature in two locations:

1. Teams Admin Center - Messaging settings

Enable “Report incorrect security detections.”

2. Microsoft Defender portal - Settings - User reported settings

Ensure Teams message reporting is enabled.

If both steps are not done, the feature will not work appropriately.

Are there any limitations?​

• Some users may report genuine dangerous messages as “safe”, so admins will have to assess the reporting judiciously
• Some government organizations may not have this feature yet

Conclusion​

This community is going to make Teams more usable--and give users more confidence that they can help protect the community when messages are incorrectly marked as unsafe. Over time, Teams will be even smarter and generate fewer false warnings.