Accept, block, or delete chat or meeting requests from people outside your organization in Microsoft Teams.

Accept or block a message request in a one-on-one chat​​​​​​​

• When you accept, the sender can send you messages in Teams and Skype. They can also view your status.

• When you block a person, they can't send you messages in Teams or Skype. They also can't view your status.

• If your phone number has been added to an organization’s extended directory, you can't review the organization's privacy policy on the accept/block page.            

Accept, block, or delete a message request in a meeting or group chat  

If you’re invited to a meeting, forwarded a meeting invite, or are added to a group chat by a user outside of your organization, you’ll go through a few steps to ensure your security.  

1. Select the sender's chat, and then select Preview messages.

2. Select Accept or Delete. Accepting the message request automatically opens the chat. If you choose to delete the chat, you’ll see a pop-up window with the option to Block the person. 

You can join a meeting regardless of whether you decide to accept, delete, or block a request from outside your org. However, your choices affect how you can use meeting chat. 

• If you select Accept before joining a meeting, you have full access to the meeting chat.

• If you choose Delete before joining, you see an error message in the chat screen and no chat history is available.

• If you choose Leave before joining, the message box and reactions are unavailable in the meeting chat pane. But you still see all your past chat history up to that point.

• If you Block the person who sent you the invite before joining, you see an error message in the chat screen and no chat history.

Learn more:

Leave or remove someone from a group chat in Microsoft Teams

Use Skype in Microsoft Teams