Fix NS_E_WMDM_REVOKED 0XC00D10BC sync error in WMP

I know it's annoying — you just want to sync a playlist to your old MP3 player or phone, and Windows Media Player throws that error. Don't worry. The fix is usually quick.

The main fix: update your device's firmware

This error shows up when the DRM (digital rights management) certificates on your device are too old. Windows Media Player checks these certificates before transferring protected files. If they're expired, it stops the sync.

Check the manufacturer's website for your device model — look under Support or Downloads.
Download the latest firmware update. Most companies have a tool or a file you run.
Connect your device to your computer using a USB cable. Don't use a hub — plug directly into the PC.
Run the firmware update tool. Let it finish. This can take 5–15 minutes. Don't unplug the device during the update.
After it finishes, restart your computer. Then connect your device again.

After doing this, Windows Media Player should sync without the error. If it still shows the error, move to the next step.

Second fix: clear old DRM licenses

Sometimes the DRM certificates on your computer are the problem. Here's how to reset them:

Close Windows Media Player completely.
Open File Explorer. Go to this folder: C:\ProgramData\Microsoft\Windows\WMDM
Delete everything inside that folder. Don't delete the folder itself — just the files inside.
Open a command prompt as Administrator. Click Start, type cmd, right-click Command Prompt, choose Run as administrator.
Type this command and press Enter:
```
regsvr32.exe wmndmoe.dll
```
You'll see a message saying the registration succeeded. Click OK.
Restart your computer.

Now open Windows Media Player and try syncing again. This clears out corrupted DRM data on your PC.

Third fix: reinstall the device driver

If the device still won't sync, the driver might be stale. Here's how to refresh it:

Connect your device to the computer.
Right-click the Start button, choose Device Manager.
Look for your device under Portable Devices or Universal Serial Bus controllers. It might show as an unknown device with a yellow exclamation mark.
Right-click the device, choose Uninstall device. Check the box that says Delete the driver software for this device if it appears.
Disconnect the device from the USB port. Wait 10 seconds.
Plug it back in. Windows will reinstall the driver automatically.

After the driver is installed, try the sync again. This fixes most cases where the device isn't being recognized properly.

Why does this error happen?

Windows Media Player uses DRM to protect copyrighted music and videos. Your device has a certificate that proves it can handle DRM content. Over time, these certificates expire. The error code 0XC00D10BC literally means the device's DRM certificate is revoked or expired.

This happens most often with older portable media players — like old Zunes, early Android phones, and some MP3 players from 2010–2015. The manufacturers stopped updating the firmware. So the certificates never got refreshed.

If your device is really old and no firmware update exists, you might need to use a different music player or switch to non-DRM files (like MP3s you own).

Less common variations of this issue

Sometimes the same error shows up in different situations:

Error in Windows Media Center

If you get this error in Windows Media Center (Windows 7 or 8), the fix is the same — update the device firmware or clear the WMDM folder.

Error with a USB flash drive

Some people get this error when trying to sync to a USB flash drive. That's weird because flash drives don't usually have DRM. The real problem here is that Windows thinks the flash drive is a portable device. Try reformatting the flash drive as FAT32, then copy music manually without using WMP sync.

Error after Windows update

If the error started right after a Windows Update, the update might have changed DRM settings. Run the second fix (clearing WMDM folder) — that usually sorts it out.

How to prevent this in the future

You can't stop certificates from expiring, but you can do a few things:

Keep your device's firmware updated. Check for updates every 6 months.
Use non-DRM music files. MP3 files you bought or ripped yourself won't trigger this error.
If you use Windows Media Player regularly, clear the WMDM folder once a year — prevents buildup of old certificates.
For new devices, buy ones that still get firmware updates. Avoid cheap MP3 players from unknown brands.

That's it. Nine times out of ten, updating the device firmware or clearing the DRM folder fixes error 0XC00D10BC. If nothing works, your device might be too old to support DRM anymore. In that case, try using VLC Media Player instead — it doesn't check DRM and will sync your files fine.