How to Fix the Windows Volume Mixer

Step 1: Restart Windows Explorer

1. Press Ctrl+Shift+Esc to open Task Manager.
2. Find 'Windows Explorer' in the Processes tab.
3. Right-click it and choose 'Restart'.
4. Try opening the Volume mixer again from the taskbar.

Step 2: Reset the Volume mixer via the legacy sndvol tool

1. Press Win+R, type sndvol, and press Enter.
2. If the legacy mixer opens normally, the issue is specific to the modern flyout rather than the audio subsystem.
3. Use sndvol as a temporary substitute while you investigate the modern mixer further.

Step 3: Restart the Windows Audio services

1. Open services.msc via Win+R.
2. Restart 'Windows Audio' and 'Windows Audio Endpoint Builder' in that order.
3. Reopen the Volume mixer to check if the app list now populates.

Step 4: Check for pending Windows updates

Settings > Windows Update occasionally ships fixes for known mixer bugs; install any pending update and restart before trying further steps.

Alternative: use EarTrumpet's flyout instead

If the modern mixer specifically is broken, EarTrumpet provides its own independent flyout with the same per-app sliders, sourced from the same underlying Windows audio APIs.

Before you start

All four fixes below use tools already on your PC — Task Manager, sndvol, Services, and Windows Update — so there's nothing to install first. Close any apps with unsaved work before Step 3, since restarting the audio services briefly interrupts anything currently playing or recording.

Alternative: use Settings instead of the tray flyout

If the mixer specifically won't open from the taskbar icon, try reaching it through Settings > System > Sound > Volume mixer instead (Windows 11) or Settings > System > Sound > App volume and device preferences (Windows 10). This uses a slightly different launch path and sometimes succeeds even when the tray shortcut fails.

If the mixer is still broken after these steps

When the Volume mixer remains unusable after restarting Explorer, the audio services, and updating drivers, the underlying cause is more likely a broader audio-stack issue than something specific to the mixer — work through the fuller volume control troubleshooting guide next. If a single app's slider is the only thing not working once the mixer itself opens fine, see how to fix app volume that won't change instead.

Frequently asked questions

Why does the Volume mixer open but show no apps?

This typically means the app list failed to refresh; restarting Windows Explorer (Step 1) resolves it in most cases.

Is sndvol the same as the modern Volume mixer?

No, sndvol.exe is the legacy Windows mixer that has existed since Windows Vista; it works independently of the newer flyout-based mixer.

Can outdated audio drivers break the mixer specifically?

Yes, an outdated or corrupted driver can prevent the mixer from correctly enumerating apps and devices; see the driver update steps in the general volume control fix guide.

Can a full system reset fix a broken mixer if nothing else works?

Yes, but it should be a last resort — restarting Explorer, restarting audio services, and updating drivers resolve the vast majority of mixer issues without needing a reset.

Why does the mixer work fine right after a restart but break again later?

This usually points to a background app or driver re-triggering the same conflict over time; check Task Manager for anything that installs a virtual audio device, and consider updating the audio driver as in Step 4 above.