Windows sound settings for interview apps: a setup guide

The five-minute Windows audio check

1. Settings › System › Sound: set Output and Input to your headset.
2. In the meeting app's audio settings, choose the same headset for speaker and microphone.
3. Settings › Privacy & security › Microphone: turn on “Let desktop apps access your microphone”.
4. Sound Control Panel › Communications tab: choose “Do nothing” so Windows stops ducking other audio.
5. Headset Properties › Advanced: untick “Allow applications to take exclusive control of this device”.
6. Join a test call and confirm the other person is captioned and you are not mistaken for them.

Why matching devices matters

Windows lets each app send its sound to a different device. If Zoom plays through your headset while the system default is still the laptop speakers, a tool listening to the default output hears silence. In Windows 11, Settings › System › Sound › Volume mixer shows per-app output; in Windows 10 the same control is called App volume and device preferences. Set the meeting app to “Default”, or to the same headset the interview tool uses, and the mismatch disappears.

Headsets that appear twice

Bluetooth headsets often show up as two output devices, one labelled for stereo listening and one labelled Hands-Free or Headset for calls. Meeting apps switch to the Hands-Free device when your microphone opens. If the interview tool is still listening to the stereo device, it hears nothing during the call. Pick the Hands-Free device everywhere during interviews, or use a wired or USB headset that appears once. More in Bluetooth headsets and interview audio.

Settings that quietly break capture

Exclusive mode deserves a note. When an app takes exclusive control of a device, its audio bypasses the Windows mixer, and loopback capture cannot see it. Few meeting apps use it, but some audio utilities do. Turning it off removes a rare but confusing failure.

Do you need Stereo Mix?

Older guides tell you to enable Stereo Mix, a legacy recording device that some sound cards expose. Modern interview tools do not need it: Windows offers loopback capture of any output device to ordinary apps. Leave Stereo Mix disabled unless a specific tool's instructions ask for it, because an enabled Stereo Mix can be picked as a microphone by mistake and feed the call back to itself. See how system audio capture works.

Microphone settings that shape how you sound

The interviewer hears your microphone, so it deserves the same attention. In Settings › System › Sound, open your input device and check the input volume: speak normally and aim for the level meter to reach about two-thirds, not the top. Many laptops add their own processing — voice clarity, background noise removal, automatic gain — through manufacturer utilities. These can help in a noisy room but sometimes clip the start of words, which also hurts transcription of your answers in practice sessions. Meeting apps add a second layer of noise suppression, so if both are on, try turning one off and compare.

Finally, check for a mute switch on the headset cable or a mute key on the keyboard with its own light. More interviews are derailed by a forgotten hardware mute than by any software setting.

When you are captioned as the interviewer

If your own words trigger answers, the interviewer's audio is not the problem — your voice is reaching the output stream. The usual causes are laptop speakers echoing into the microphone and “Listen to this device” being ticked in the microphone's properties, which plays your mic through your speakers. Wear headphones and untick that option.

Where CoPilot Interview fits

CoPilot Interview, a free AI interview assistant for Windows 10 and 11 and macOS, captures the call through Windows' built-in loopback, with no virtual cable or driver. If captions stay empty, the checklist above fixes it in almost every case; the troubleshooting guide covers the rest.

Disclosure: CoPilot Interview is our product, so weigh what we say about it accordingly. Everything else on this page applies whichever tool you use, or none.

Frequently asked questions

Why can't my interview app hear the other person on Windows?

Most often the meeting app is playing through a different device from the one the interview app is capturing. Set the meeting app, the Windows default output and the interview app to the same headset.

Do I need to enable Stereo Mix for interview apps?

No. Windows offers loopback capture of any output device to ordinary apps. Stereo Mix is a legacy device and is best left disabled unless a tool specifically requires it.

What does exclusive mode do to audio capture?

An app with exclusive control sends audio straight to the device, bypassing the Windows mixer, so loopback capture cannot see it. Turning exclusive mode off avoids that.

How do I stop Windows lowering the volume during calls?

Open the Sound Control Panel, go to the Communications tab and choose “Do nothing”. Windows will stop ducking other audio when it detects a call.