Illegal instruction on an old CPU
Your processor may be missing an instruction Luduvo uses. That's a guess, not confirmed.
What you see
Event Viewer shows EXCEPTION_ILLEGAL_INSTRUCTION when you join a game.
Who's affected
Seen once, on an Intel i5-2500 from 2011.
What to do
- Note your CPU model (Settings, System, About).
- Send the report below with your CPU model. The original thread was marked resolved without saying how.
Status
No staff word on this one yet.
How the Doctor spots it
This one doesn't leave a log. Pick it in the "No log? Pick what you saw" list on the Doctor page.
Sources
- Report forum
- Marked resolved forum
unconfirmed means a player suggested it and nobody has confirmed it works yet.
Last checked 26 Sep 2026.