If the Battle.net launcher opens fine but Overwatch 2 itself refuses to start, the first thing to check is your graphics drivers. An outdated GPU driver is one of the most common culprits. Update through GeForce Experience or AMD Adrenalin, then restart the machine — not just the launcher.
Error codes like LC-208 or BN-564 usually mean the authentication servers are struggling or your session token is corrupted. Log out of Battle.net completely, clear the app cache folder (found in %AppData%\Battle.net), and log back in. If the error persists, check whether your account has a pending email verification — Blizzard sometimes locks login until it's confirmed.
A stable 60ms connection can spike to 300ms mid-match for a few reasons:
In the game settings, set your preferred server region manually rather than leaving it on Auto.
If the matchmaking screen spins forever, it's often a firewall or router port issue. Overwatch 2 needs UDP ports 3074, 3724, 6113, and 27015–27200 open. Check your router's port forwarding settings and make sure Windows Firewall isn't blocking Battle.net.
Sudden freezes — especially with audio looping — usually point to RAM or VRAM running out. Lower texture quality one step and disable 'Reduce Buffering' in the graphics options. Also check CPU temperature with HWMonitor during a match; thermal throttling causes exactly this kind of stutter.
If an update download hangs at a fixed percentage, pause it, close the launcher entirely, delete the 'Battle.net' and 'Overwatch' folders inside %ProgramData%, and restart. The launcher will recheck files and resume correctly.