BC sign-in no longer working on either of my consoles, anyone else seeing this?

some BC games will either do that or say that the service no longer works for the game... you may have to look up if that game is still supported on Xbox Live for playing multiplayer.... but in the meantime, check your NAT type and make sure it is open,
then try signing out of live and signing back in and see what happens.

The easiest way to see if it's the disc or the console or something else would be to get another copy of the game from either a friend, or even rent a copy and see if it works. That's the easiest way to confirm if it's your disc that's no longer working
or something else.

That was my best educated guess since the game was working fine before the scratch and I'm assuming that since you said Disc 1 that Disc 2 is working fine. This leads me to believe it's an issue with the disc and not anything to do with the console.

Yes I've reset both consoles several times to no use. When I couldn't sign in on my 360 I jumped over to the One to play for a bit then tried a BC game. Same issues. I've not been signed into either console at the same time.

i had witcher 2 going but it no longer works. none of bc games work with disc. the optic drive they put in these consoles suck.

Is there anyone else who signs in through your console?? Check their gamertag and see if the have a ban.