Fix 0XC00D2733 DRM Error in Windows Media Player

Quick answer: Delete the DRM license store folder at %PROGRAMDATA%\Microsoft\PlayReady and restart Windows Media Player. That wipes corrupted licenses and forces a clean rebuild.

I know this error is infuriating—you're trying to watch a video or listen to a song you've got the rights for, and Windows throws up that 0XC00D2733 code instead. The root cause is almost always a corrupt Digital Rights Management (DRM) license store or a broken PlayReady component. Windows Media Player or any app relying on it (like older Netflix or Amazon Video UWP apps) can't decrypt the media stream. This tripped me up the first time too, back when I was running a help desk blog and a client's Windows 7 laptop refused to play purchased iTunes movies. The fix hasn't changed much since then.

Why This Happens

The DRM stack in Windows uses a license store at C:\ProgramData\Microsoft\PlayReady (hidden by default). When that store gets corrupted—usually from a failed Windows update, a crash during playback, or a software conflict—the decryption object can't be created. The error code 0XC00D2733 is the DRM component saying "I can't build the decryptor." I've seen it most often after a Windows 10 feature update (like 22H2) or when switching between different DRM-protected services.

Step-by-Step Fix

Before you start, close any media players (Windows Media Player, Groove Music, etc.) and internet browsers that might hold DRM licenses.

Open File Explorer and paste this into the address bar:
```
%PROGRAMDATA%\Microsoft\PlayReady
```
You'll land in a folder with several files and subdirectories. If you don't see it, enable hidden items in View tab.
Delete everything inside the PlayReady folder. Don't delete the folder itself—just the files and subfolders. Select all (Ctrl+A) then delete (or Shift+Delete for permanent removal).
Windows will recreate these files when you next play DRM content. This is the nuclear option, but it works 90% of the time.
Restart Windows Media Player or your affected app. Try playing the same media again. The first time, it'll take a few seconds to regenerate the license store and re-acquire the license from the server.
If the error persists, run this command in an elevated Command Prompt (Run as administrator):
```
reg delete "HKLM\SOFTWARE\Microsoft\DRM" /f
```
This clears the DRM registry keys—be careful, it's a sledgehammer. Then reboot and retry the PlayReady folder deletion above.

Alternative Fixes

If the main fix doesn't cut it, don't panic. Here's what else I've seen work:

Reset the Windows Media Player settings. Open WMP, go to Tools (Alt+T) > Options > Privacy tab, and click "Reset All Defaults." Then try again.
Update or reinstall Windows Media Player. In Windows 10/11, go to Settings > Apps > Optional features, find Windows Media Player, and reinstall it. This replaces the core DRM files without touching licenses.
Check for third-party DRM conflicts. If you've installed any "DRM removal" tools or codec packs (like K-Lite), they can break PlayReady. Uninstall them temporarily and test.
Run the Microsoft Media Creation Tool. For stubborn cases on Windows 10, a repair upgrade (keeping your files) can refresh the entire DRM stack. Download it from Microsoft's site, run it, and choose "Keep personal files and apps."

Prevention Tips

Once you've fixed the error, here's how to keep it from coming back:

Don't force-close media players while they're playing DRM content. Always stop playback first, then close the app. Abrupt closures corrupt the temp license files.
Run Windows Update regularly. Microsoft pushes PlayReady updates through Windows Update. I've seen several cumulative updates address DRM stability.
Back up your DRM licenses if you have purchased content. Use a tool like Windows Media Player's built-in license backup (Tools > Manage Licenses). The error doesn't break your actual rights—it just blocks the decryption—but having a backup saves you from re-authorizing everything.

That should get your audio and video playing again. If you're still stuck after all this, you might be dealing with a corrupted user profile or a deeper OS issue—try creating a new Windows user account and testing there. But seriously, the PlayReady folder deletion fixes 9 out of 10 cases I've encountered. Good luck.