Just as the title says. I tried reinstalling MC, using a different launcher (Badlion), resetting my router, restarting my PC (yeah, technical support professional here), changing account credentials. Still, the launcher says that I'm offline. (Side note: 1 I didn't do anything with MC rather than just playing before it happened, so I'm pretty sure it wasn't me who broke something / 2 Yes, I also tried with my AV off)