Fix NS_E_AUDIODEVICE_UNEXPECTED (0XC00D1B62) on Windows

Quick Answer (for pros)

Run this in Command Prompt as admin to restart the audio service: net stop audiosrv && net start audiosrv. If that doesn't work, unplug and replug your headphones or speaker.

What's going on?

The NS_E_AUDIODEVICE_UNEXPECTED error (code 0XC00D1B62) shows up when Windows suddenly loses your audio device. You'll see it in Windows Media Player, VLC, or even in Edge when playing a video. The player says something like "Windows Media Player cannot play the file. An audio device has been removed or is not functioning."

This usually happens when you plug or unplug headphones while something is playing. Or when your audio driver crashes for a second. Windows doesn't recover gracefully – it just throws this error and stops.

I know it's annoying when you're in the middle of a podcast or a meeting. But the fix is simple and fast.

Step-by-step fix

1. Plug in your headphones or speaker again. If you were using built-in speakers and then plugged headphones, unplug them and plug them back. If you were on headphones, unplug, wait 5 seconds, plug back.
2. Restart the audio service. Press Win + R, type services.msc, hit Enter. Find Windows Audio in the list. Right-click it and choose Restart. Also restart Windows Audio Endpoint Builder right below it.
3. Run the audio troubleshooter. Go to Settings > Update & Security > Troubleshoot > Additional troubleshooters > Playing Audio. Run it. It will detect the issue and reinstall the driver.
4. Update your audio driver. Open Device Manager (right-click Start). Expand Sound, video and game controllers. Find your audio device (Realtek, Intel, or whatever). Right-click, choose Update driver > Search automatically for drivers.

Alternative fixes if the main one doesn't work

1. Kill the app and restart

Close the player or browser completely. Wait 10 seconds. Reopen. Sometimes the app just needs a clean start.

2. Change the default audio device

Right-click the speaker icon in the taskbar. Choose Sounds. Go to the Playback tab. See if your device is listed. If it has a green checkmark, right-click another device (like speakers) and choose Set as Default Device, then do the same again for your original device. This forces Windows to re-initialize the audio path.

3. Disable audio enhancements

Right-click the speaker icon > Sounds > Playback tab. Right-click your default device > Properties > Advanced tab. Uncheck Enable audio enhancements. Apply. This can stop the driver from crashing on weird audio formats.

4. Run system file checker

Open Command Prompt as admin. Type sfc /scannow and press Enter. Let it scan. It will fix corrupted system files that might affect audio.

Prevention tip

Next time, pause your music or video before plugging or unplugging headphones. Windows 10 and 11 are better at handling hot-swap audio, but they still choke sometimes. Pausing gives the driver a clean moment to switch.

Also, keep your audio driver up to date. Old Realtek drivers (especially from 2020) are famous for this error.

Got stuck? The audio troubleshooter in step 3 usually catches the problem. If not, a full restart of the PC always resets the audio stack. It's overkill, but it works.