Failed to connect to Server

While in a group, I have faced the problem of my teammates entering the game while I don’t. When this happens, a message appears on the chat saying: ‘‘Failed to connect to Server.’’
It started out of nowhere, and even after repairing the game, it continues.
My teammates are facing the same problem.

Basically something between you and the game server is blocking you from accessing that server IP for that specific match. This error does not come up in casual modes because you simply try to find the next match if you are blocked, but with Competitive once you are assigned to a specific match, you are committed to that match.

Mmake sure everything with your end is working correctly first:

If this error is remaining persistant, please reply back and more advanced tips can be provided.