Common Co-op Errors (YAPYAP)

Use this quick list to triage the most common co-op problems. If a fix doesn’t work, jump to the detailed troubleshooting pages below.

Symptom → Quick fix

• Can’t invite friends → Make sure you’re in a lobby, Steam Overlay works, and friends are online
• Invite option missing → You’re likely not in a lobby yet
• Can’t join lobby → Restart Steam + game, then try again
• Voice chat desync / delays → Check Steam Voice transmission type and run Microphone Test
• Spells work but voice chat doesn’t → Re-check Steam Voice input device and PTT binding

When it’s a voice issue

• Mic not detected: Mic Not Detected Fix (YAPYAP)
• Voice casting not working: Voice Casting Not Working (Fix Guide)
• Best mic settings: Best Mic Settings for YAPYAP
• Voice lag: Voice Lag Fixes in YAPYAP
• PTT vs open mic: PTT vs Open Mic in YAPYAP

When it’s a co-op setup issue

• Invite friends: How to Invite Friends in YAPYAP (Co-op Guide)
• Player count: How Many Players in YAPYAP (Up to 6 Co-op)