NS_E_DRM_LICENSE_INVALID_XML (0XC00D2725) fix

When does this error actually show up?

You're playing a video or audio file you bought or rented online – maybe a movie from an old store, or a podcast episode with DRM protection. Suddenly, Windows Media Player pops up with the error:
NS_E_DRM_LICENSE_INVALID_XML (0XC00D2725).

The file won't play. The player says the license is corrupted. It's not your internet connection, not a missing codec – it's the license file itself that's busted.

I saw this last week on a client's Windows 10 machine. They had a bunch of old music files from a service that went under years ago. The license XML had a single bad character, and the whole thing fell apart.

Why does this happen?

The license file for DRM (Digital Rights Management) is stored as XML text on your hard drive. When that XML gets a typo, a missing tag, or some corruption (from a crash, disk error, or old software), the player can't read it. So it throws error 0XC00D2725.

It's not a network problem or a file format issue. The license file is sitting there but it's garbage now. The player doesn't know what to do with it.

The fix: clear the DRM data store

This is the only reliable fix I've found. You're going to delete the license folder, then re-register the DRM components. You'll lose any licenses that aren't backed up online – but they were already broken, so no real loss.

1. Close Windows Media Player completely. That includes any background processes. Check Task Manager if you're not sure.
2. Open the DRM folder. It's typically at:
   C:\ProgramData\Microsoft\Windows\DRM
   (ProgramData is a hidden folder. Press Win+R, type %ProgramData%\Microsoft\Windows\DRM, hit Enter.)
3. Delete everything in that folder. Not the folder itself, just the files inside. You might get a warning about files in use – if so, restart your PC and try again before any media player opens.
4. Re-register the DRM DLLs. Open Command Prompt as Administrator. Type these commands one by one, hitting Enter after each:
   

   regsvr32.exe %windir%\system32\drmv2clt.dll
   regsvr32.exe %windir%\system32\drmstor.dll
   regsvr32.exe %windir%\system32\blackbox.dll
   regsvr32.exe %windir%\system32\drmmgrtn.dll

   Don't skip any. If you get a success message for each, good.
5. Restart your PC. Then open Windows Media Player and try the file again. It'll try to re-download the license from the original server. If the server is still up and the license is valid, it'll work.

If that still doesn't work

Three things to check:

• Is the file itself corrupt? Try a different file from the same source. If other files play fine, the problem is that one file's license, not your whole system.
• Is the DRM server still alive? Old music stores, movie rental services – they shutdown. If the server that issued the license is gone, you can't get a new one. The file is dead.
• Update Windows Media Player. I know, nobody updates it. But Microsoft did push fixes for DRM issues in some cumulative updates. Run Windows Update and get the latest.

Real talk: I had a client who insisted their old DRM'd files were 'worth money.' The service went under in 2012. No server = no license = no playback. I told them to rip the audio if they owned the disc. They didn't. Some things you just can't fix.

One more trick for Windows 10/11

If the steps above don't work, try the built-in troubleshooter for Windows Media Player. It's buried in Settings > System > Troubleshoot > Other troubleshooters > Windows Media Player. Run it. It sometimes helps clean up leftover DRM junk.

But honestly, the folder delete + re-register method is the gold standard. It's worked for me on Windows 7, 8, 10, and 11. If it fails, your DRM license is probably gone for good.

Bottom line: don't waste time poking at the XML file manually. You'll break it more. Just nuke the folder and let Windows rebuild it. That's the fix.