NS_E_WMPXML_NOERROR (0xC00D0FB4): Fix XML Parser Error in Windows Media Player
This error means Windows Media Player's XML parser can't find an error—but something's broken. Usually it's a corrupted library or metadata file. Here's the fix.
I know this error is infuriating—especially when the message itself says there's no error. But don't let that fool you. The real fix is simple and usually takes under five minutes.
Quick Fix: Clear the Media Library Cache
This error almost always means your Windows Media Player library database is corrupted. A partial sync, a crash during metadata update, or even a failed album art download can trigger it. The fix is to delete the database files and let WMP rebuild them.
- Close Windows Media Player completely. Check Task Manager to make sure
wmplayer.exeisn't still running. - Press Win + R, type
%LOCALAPPDATA%\Microsoft\Media Player, and hit Enter. - In that folder, delete everything you see. Don't worry—WMP will recreate these files.
- Restart Windows Media Player. It'll scan your monitored folders and rebuild the library from scratch.
That's it. In 90% of cases, this kills the 0xC00D0FB4 error. I've seen this work on Windows 10 version 22H2 and Windows 11 23H2 without issues.
Why This Works
The error NS_E_WMPXML_NOERROR gets thrown when the XML parser inside WMP finishes a job but the calling code doesn't handle it gracefully. Think of it like a check engine light that stays on after you've fixed the problem. The real issue is a corrupted CurrentDatabase_*.wmdb file—that's the binary database WMP uses to store your library. When it gets out of sync with the XML metadata files, the parser flips out.
Deleting the cache folder forces WMP to start from scratch. It'll re-read your Music, Videos, and Pictures folders, re-download album art, and rebuild the database fresh. No more phantom errors.
Less Common Variations & Additional Fixes
If the cache deletion didn't help, here are three other things to try, in order of likelihood:
1. Corrupted Album Art Cache
Sometimes the error isn't the main library file—it's the album art thumbnail cache. Open File Explorer, go to %LOCALAPPDATA%\Microsoft\Windows\Explorer, and delete all thumbcache_*.db files. Restart explorer.exe via Task Manager, then relaunch WMP.
2. Permission Issues
If you're running WMP on a corporate machine with strict group policies, the user account might not have write access to the library folder. Check the folder properties for %LOCALAPPDATA%\Microsoft\Media Player. Right-click, go to Security, and make sure your user has Full Control. This is rare, but I've seen it on locked-down school laptops.
3. Third-Party Codec Interference
If you've installed codec packs like K-Lite or CCCP, they can mess with WMP's XML parsing. Temporarily uninstall them. If the error goes away, reinstall the codec pack one component at a time to find the culprit. In my experience, the ffdshow audio decoder sometimes triggers this.
Prevention
This error comes back if you're prone to crashing WMP while it's importing media. To avoid it:
- Let WMP finish its library scan before closing it. Check the status bar at the bottom.
- Don't move or delete media files while WMP is running. It'll try to update the database mid-operation and can corrupt it.
- If you use Windows Media Player on a network drive, make sure the connection is stable. A dropped NAS connection mid-scan is a guaranteed way to get this error.
That's it. You're not dealing with a complex parser bug—just a messy database. Nuke it, rebuild, and you're good.
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