NS_E_WMP_NONMEDIA_FILES (0XC00D119C) fix
Windows Media Player throws this when it can't handle non-media files in a playlist. Usually a corrupted library or bad file type.
Quick answer (for pros)
Stop WMP, delete the library database files in %LOCALAPPDATA%\Microsoft\Media Player, restart WMP.
What's going on
Windows Media Player (WMP) keeps a database of all your music and videos. When you add a playlist that includes a file it doesn't recognize—like a .pdf, .exe, or a corrupted .mp3—it throws the 0XC00D119C error. The culprit here is almost always a corrupted library database or a junk file snuck into your media folder. I've seen it happen after a disk cleanup, a bad file transfer, or when someone drags a whole folder into WMP that contains system files.
Fix steps (start here)
- Close WMP completely. Open Task Manager (Ctrl+Shift+Esc), find Windows Media Player in the Processes tab, right-click it, and choose End Task. If you don't see it, skip this.
- Open File Explorer. Paste this into the address bar:
%LOCALAPPDATA%\Microsoft\Media Playerand hit Enter. - Delete everything in that folder. Select all files (Ctrl+A), hit Delete. Don't worry, WMP will rebuild it fresh. If it says a file is in use, you missed step 1.
- Restart WMP. It'll take a minute to rebuild the database. Add your media folder again—don't drag the whole drive.
Alternative fixes (if the main one fails)
Check the playlist
If the error only happens with one playlist, open it in Notepad. Look for lines ending in weird extensions like .jpg, .docx, or .lnk. Delete those lines and save the file. Then try opening it in WMP again.
Repair WMP
Open Control Panel > Programs > Turn Windows features on or off. Uncheck Windows Media Player, reboot, then check it again. Don't bother with the Settings app repair—it rarely helps here.
Clean your media folder
Run a search in your music folder for *.exe *.zip *.pdf *.lnk and delete anything that shouldn't be there. I've seen people store PDF manuals next to their MP3s and WMP chokes on them.
One time a client had a hidden thumbs.db file in every folder from an old network share. Deleting those fixed it instantly.
Prevention tip
Keep your media files in a dedicated folder with only audio and video formats. Don't mix in documents, installers, or system files. Use a media organizer like MusicBee or VLC if WMP keeps causing headaches—they handle junk files better. And don't let WMP auto-manage your entire User folder. That's asking for trouble.
That's it. If you still see the error after this, you've got deeper corruption. Try sfc /scannow from an admin command prompt, or just switch to a different player. WMP is fine for basic stuff, but it won't win any awards for handling edge cases.
Was this solution helpful?