Gaming · Windows PC
How to Fix Mic Not Working & Audio Issues in CS2
Source-checked About 10 minutes
Answer
Test the microphone in Windows first, then select the same input device in Steam voice settings and Counter-Strike 2. Confirm microphone permission and push-to-talk binding, restart Steam and CS2, and test in a permitted voice session. Verify game files only if the microphone works elsewhere but CS2 still cannot use it.
Test the microphone in Windows
Open Settings > System > Sound > Input, select the intended microphone, and run its input test. If Windows receives no signal, fix the device connection or Windows input before changing CS2.
Check microphone permission
Open Settings > Privacy & security > Microphone and allow microphone access for desktop apps so Steam and CS2 can receive input.
Select the input in Steam
Open Steam voice settings, select the tested microphone, and use Steam's microphone test. Keep automatic gain or processing unchanged until basic input works.
Check CS2 voice controls
In CS2 Audio settings, select the same input if that control is available, enable voice, and confirm the push-to-talk key is bound and not shared with another action.
Restart and test one session
Close CS2 and Steam, reopen both, and test voice in a permitted lobby or match. Confirm the in-game voice indicator responds and another participant can hear the test.
Verify files only for a CS2-only failure
If Windows and Steam tests work but CS2 still fails, use Steam's Verify integrity of game files control, then repeat the same voice test.
Escalate with the audio path
If CS2 alone still has no microphone, report the microphone model, Windows test, Steam test, selected CS2 input, voice binding, and game version to Steam Support.
Video walkthrough
If it does not work
- If the same exact error survives an official repair, stop repeating resets and send support the code, logs, device details, and time of failure.
- If the official status page reports an incident, wait for recovery; reinstalling or changing accounts cannot repair a service outage.
Sources and verification
Checked against official documentation on . Scope: Windows PC.
Follow the linked first-party guidance if labels differ after a platform or app update.