Teams messages about data loss prevention (DLP) policies

Teams messages about data loss prevention (DLP) policies

Data loss prevention policies are a way for your organization to protect company and employee information. Your organization may apply a DLP policy to protect employees from sending sensitive information (like a credit card number, Social Security number, etc.) in a Microsoft Teams channel or chat—including meeting chats—where guests or other partners from outside your organization are present.

Your organization can apply a DLP policy to protect sensitive information in messages and in documents. If sensitive information is sent in a message, that message may be audited or deleted based on the type of policy. If you’re the sender, you may receive a system message with the option to notify your admin to review the message and resolve it. And if your organization allows, you may also have the option to override and send the message.

When your organization has a SharePoint or OneDrive for Business DLP policy in place and you try to share a file in Teams that contains sensitive information, people outside your organization won’t be able to open the file.

Potential notices you may receive when sending sensitive information 

What you'll receive

What you can do

This message was flagged.

A message flagged by an organization's data loss prevention policy

This means your org's DLP policy will still send your message, but it's been flagged for containing sensitive date. It will remain flagged to show that it contains sensitive information.

A dialog explaining why a message was flagged by an organization's data loss prevention policy

If you believe the message was flagged in error, select What can I do? This will open a form where you can report the message to your admin for review.

This message was blocked. (Override not allowed)

Teams message stating a message was blocked from sending

This means your org's DLP policy has blocked your message from showing. Recipients will also receive a message stating that the content of your message was blocked.

Dialog explaining why a message was blocked and can't be overridden

Select What can I do? From there, you can report the message to your admin for review. This won't override the policy. Your message will remain blocked until your admin reviews and deems it safe to send.

This message was blocked. (Override allowed)

Teams message stating a message was blocked from sending

This means your org's DLP policy has blocked your message from showing. Recipients will also receive a message stating that the content of your message was blocked.

Override options for organizational data loss prevention policy

Select What can I do? If your org allows you to override the policy, you may see any of the following options:

  • Override and send

  • Report to my admin

  • Override and send and report to my admin

Note: In some policies, you may have to provide a justification for the override.

If you receive a message that gets blocked by an org's DLP policy

Instead of an option to override, you’ll get a message that says “This message was blocked by organizational policy. What’s this?”. Selecting What’s this? brings you to this article.

Teams system message a recipient gets when someone sends them a message blocked by an org's data loss prevention policy

Note: If the sender is able to override the policy, the original message will be sent to you as soon as the override is done.

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