When attempting to join a server, the menu will freeze for up to a minute, before telling me that authentication was failed. Closing & reopening the game doesn't help & it appears to be triggered completely randomly.
MC-43938
Failed Authentification
Resolved
Incomplete
0
Please attach the complete output of the "Development console" tab of the launcher.
Click the text, press CTRL-A to select all, then CTRL-C to copy, and CTRL-V to paste in a comment on this ticket.
If the launcher closes after game start, please edit your profile and select "Launcher visibility" then, "Keep the launcher open".