'Not Connected' Multiplayer Error

[NekoWaffle]

I was trying to play multiplayer with my friends and I could not look for, connect to or create any lobbies. Whenever I selected the multiplayer option from the menu, a message of "NOT CONNECTED" would be all that appears and an option to return to the main menu.

Invite links would dump me into the main menu and would not connect, obviously I can't host games without accessing the working multiplayer menu, and none of the following produced any effect:
- Restarting PC
- Restarting Steam
- Going Offline on Steam and Resuming Connection
- Reinstalling Sentinels
- Verifying Game Cache
- Shutting Down Antivirus and FIrewall
- Setting the .exe to be ran as Administrator

When I first installed the game a few months ago I could access the menu without issues, though I did not attempt to join any games.

Frankly, I bought this for my friends to play with me and this has torpedoed game night. I'd really like this to be investigated soon. No specific or verbose error messages are accompanied with this problem, so frankly I'm out of ideas.

[MigrantP]

Hi, the online multiplayer service has not had any downtime in the last 24 hours. Perhaps there is something going on with your network connection. Are you still having a problem?

[NekoWaffle]

Seems fine now. I'll keep you posted if there's trouble again.