If your mic works elsewhere but voice casting won’t trigger, the issue is usually input selection, aggressive noise suppression, or unstable capture settings.
A) Spells never trigger → start with Mic Not Detected Fix (YAPYAP)
B) Spells work, but friends can’t hear me → check Steam Voice input + transmission type/PTT binding
If it only fails in co-op, test with external voice to isolate network jitter.