Accept or block chat requests from people inside your organization in Microsoft Teams

When you receive a message from a new internal contact, you have the option to accept or block messages from that person if your admin has assigned this policy to your team.

Choose Accept to start a new conversation. If you choose Block, the sender will not be notified that you blocked them, and you’ll no longer receive their messages.

To block a sender in an existing conversation, hover over the chat in the chat list, and select More options > Block.

To unblock a person, hover over the chat in the chat list, and select More options > Unblock.

You can also hover over the person’s profile picture, and when their profile card appears, select More options > Unblock contact.

This feature only affects one-on-one chats from other people inside your organization, and doesn't affect chats in groups, channels, or meetings.

Learn more:

Accept, block, or delete chat or meeting requests from people outside your organization

Block or unblock people outside your organization