My game stopped going online since yesterday

Bug Reporting Hub User Interface & Activities
8

Workaround.
Turn on multiplayer and save changes.
You can change your status and server.

Turn off multiplayer and save changes.
You cannot change your status and server.
Status and server greyed out.

So turn on multiplayer and save changes.

Source
https://forums.flightsimulator.com/t/online-status-is-always-offline-and-cant-change-server/429114/16