Fix NS_E_WMPCORE_ITEMNOTINPLAYLIST (0XC00D1086) - WMP Can't Play File

That Error Means Your Playlist Is Broken

You click a song in Windows Media Player, and instead of playing, you get NS_E_WMPCORE_ITEMNOTINPLAYLIST (0XC00D1086). It says the file isn't in the current playlist. But it is — you just added it. I've seen this a hundred times. The fix is simple: rebuild the playlist from scratch.

The Quick Fix: Rebuild Your Current Playlist

Don't mess with the database or reinstall WMP yet. Just follow these steps:

1. Open Windows Media Player. You'll see the error again if you tried clicking a file. Close that error box.
2. In the left pane, click Playlists to expand the list.
3. Find the playlist that gave you the error. Right-click it and select Delete. Confirm the deletion. Don't worry — you're not losing the actual music files.
4. Now go to your music folder. Drag the song files you want back into the WMP window. Drop them on the Playlists section. A new playlist will appear in a few seconds.
5. Right-click that new playlist, choose Rename, and give it the same name as the old one.
6. Double-click the new playlist to open it. Click any song. It should play now.

That's it. If it works, you're done. If not, move to the next section.

Why This Works

Windows Media Player stores playlist info in a library database. When that database gets corrupted — from a crash, a sleep/wake cycle mid-play, or moving files around — it can lose track of which files belong to which playlist. The error you're seeing is the player saying 'I have the file path, but my library says it's not part of this playlist.' Deleting and recreating the playlist forces WMP to re-index those files and write a clean entry into the database. It's the same fix that applies to 90% of playlist-related errors.

Here's the thing: the original playlist file (with a .wpl extension) might still be in your Music folder. But WMP is reading from its internal database, not that file. So even if the .wpl file looks fine, the database is wrong. Deleting via WMP clears both the database entry and the .wpl file. Re-adding forces a fresh write.

Less Common Variations of This Error

If the quick fix didn't work, or the error pops up differently, try these:

Error Appears When Dragging a File to Now Playing

You drag a file to the 'Now Playing' list, and the error shows up. This usually means the file is corrupted or the path is too long. Try copying the file to a shorter path — like C:\Music\song.mp3 instead of C:\Users\YourName\Music\Subfolder\Subfolder2\song.mp3. If it plays from the short path, rename the file to something simple (no special characters) and move it back. That often works.

Error After Moving Music to a New Drive

You moved your music from an external drive to your internal drive. Now WMP gives this error. The real fix: don't move files through Windows Explorer while WMP is open. Close WMP, move the files, then reopen WMP. If the error already exists, you need to clear the WMP library cache. Here's the command:

reg delete HKEY_CURRENT_USER\Software\Microsoft\MediaPlayer\Player\RecentFileList /f

Open Command Prompt as admin, paste that, and press Enter. Then restart WMP. Your playlists will be empty, but you can rebuild them. This clears the recent file list that WMP uses to track playlist membership.

Error Only on One Specific File

If only one file triggers the error, that file is likely corrupt. Try playing it in VLC or another player. If it doesn't play anywhere, delete and re-rip the CD or re-download the file. WMP is strict about file headers — a partially downloaded MP3 will throw this error instead of a generic 'can't play' message.

How to Stop This From Happening Again

Prevention is boring but saves time. Here's what I do:

• Always close WMP before moving or renaming files. Even if WMP is minimized or hidden in the system tray, it's holding locks on the library. Move files outside of WMP, then reopen it.
• Don't use Windows Media Player on a system that goes to sleep often. Sleep corrupts the database. If you must, disable sleep for the hard drive in Power Options. Set it to 'Never'.
• Back up your playlists periodically. Instead of deleting and re-adding playlists, export them as .m3u files. Right-click the playlist, click 'Save playlist as...', and choose .m3u format. If the error ever comes back, you can import that .m3u file instead of manually dragging files.
• Keep your music in one folder. The more subfolders you have, the more chances for WMP to lose track. I keep everything in %USERPROFILE%\Music\ with no deeper than one subfolder per artist.

One last thing: if you're on Windows 11, consider switching to a different player entirely. WMP is old and gets minimal updates. VLC, Foobar2000, or even the modern Windows Media Player (the one from the Store) are less prone to this kind of database corruption. But if you're stuck with WMP, these steps will get you through it.