NS_E_DRM_CHECKPOINT_FAILED (0XC00D277F) Fix - Hard Drive Issue

Quick Answer

Open an elevated Command Prompt, run regsvr32 msnetobj.dll and regsvr32 wmp.dll, then delete the DRM folder at %userprofile%\AppData\Local\Microsoft\DRM with Media Player closed. Reopen WMP and it'll rebuild licenses.

What's Happening Here

This error pops up when Windows Media Player tries to save a DRM checkpoint—basically a bookmark for protected content—but the secure storage protection on your hard drive is corrupted or full. I've seen it most often after a Windows update screws up the DRM folder permissions, or when someone's drive is dumb-low on space. Last month, a client's Windows 11 machine threw this error after a 22H2 update; the DRM folder had gotten locked by a sync conflict with OneDrive.

Fix Steps

Step 1: Check Disk Space

Open File Explorer, right-click your C: drive, and check free space. If it's under 1 GB, clear temp files or uninstall bloatware. DRM checkpoint files are tiny (a few KB), but WMP needs write access to the system drive. A full drive blocks that.

Step 2: Reset DRM Licenses

Close Windows Media Player completely. Check Task Manager for lingering wmplayer.exe processes—kill them.
Hit Win + R, type cmd, press Ctrl+Shift+Enter to run as admin.
Run these two commands:
```
regsvr32 msnetobj.dll
regsvr32 wmp.dll
```
You'll see a success message for each.
Now delete the DRM folder. In that same admin Command Prompt, run:
```
rmdir /s /q "%userprofile%\AppData\Local\Microsoft\DRM"
```
If it says access denied, you missed a WMP process. Kill it and try again.
Reopen Windows Media Player. It'll rebuild the DRM folder and its licenses from scratch. Play a protected file to test.

Step 3: Repair Windows Media Player

If step 2 fails, the DRM component itself may be borked. Open Settings > Apps > Apps & features, find Media Feature Pack (or Windows Media Player on older builds), select Modify, then Repair. This takes 5 minutes. It'll re-register all DLLs and fix permissions.

Step 4: Check File Permissions

Sometimes the DRM folder gets locked by your user account. Right-click the DRM folder at %userprofile%\AppData\Local\Microsoft\DRM (after recreating it from step 2), go to Properties > Security, and make sure SYSTEM and your user have Full Control. If not, take ownership via Advanced > Change owner to your account.

Alternative Fixes If Main One Fails

Use a Different Media Player

Windows Media Player is legacy junk for DRM content. Switch to VLC or MPC-HC for local files, or use the Movies & TV app for purchased content. I've ditched WMP entirely for clients—fewer headaches.

System File Checker

Corrupt system files can cause DRM errors. Run sfc /scannow in an admin Command Prompt. If it finds issues, reboot and retry the DRM fix.

Registry Cleanup

Backup your registry first. Then open Regedit, go to HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Preferences, delete the DRMStore key, and repeat the fix steps. This clears stale licensing data that WMP can't flush.

Prevention Tip

Keep at least 10% of your system drive free. The DRM checkpoint system chokes when space is tight. Also, disable OneDrive sync for your AppData folder—it often corrupts the DRM store. Check this in OneDrive settings under Account > Choose folders. Uncheck AppData.

Had a client whose DRM folder bloated to 2 GB because of a corrupt license store. Clearing it and resetting permissions fixed the error in 10 minutes. Don't overthink this one—it's usually just a locked folder.