[mfrommil]

Agreed. Probably could be a much better UX for handling a mass outage like this. Graceful, clear error messaging that FB login is down would be better than the current UI.

Triggering millions of people to unnecessarily reset their password yet still be unable to login is not a great UX. This seems like one of those cases that's high impact when it does happen, never likely to occur on any given day, but likely to happen at some point; probably just wasn't much focus put on handling a case like this.

[hnfong]

From a process/QA perspective I doubt this can ever be properly tested.

Sure you can set up a UX to show that the auth server is somehow down and discourage users from trying to login/reset passwords, but when shit hits the fan, you actually never know the precise error that gets thrown to the client because it could be any layer between the backend and the client that failed...