Windows Media Player not working: causes and fixes for common errors

If Windows Media Player won’t play music or videos, first check whether it displays an error code: this can help distinguish between a playback issue, a missing codec, a connection failure or a file restriction. If no message appears, the Windows Get Help app provides a starting point for diagnosing the problem without changing settings blindly.

There are several ways to troubleshoot problems in Windows 10 and Windows 11, but it is important to distinguish between the options in the classic player and those in the newer app, as their menus are not interchangeable. The steps below for restoring the library and deleting its database apply to the classic player.

How to use Get Help

Open the Start menu, type Get Help and select the app. In its search box, enter Windows Media Player along with a brief description of the problem and the error code, if you have one. Then follow the suggested troubleshooting steps.

If you cannot resolve the issue, use Contact Support, select Windows and continue to the browser chat option. You can choose whether to share optional device information to help with diagnosis. Confirm your details and sign in with your Microsoft account when prompted.

Playback errors: updates, library and cache

Errors 0xC00D0BC2, 0xC00D36FA, 0xC00D10B3 and 0xC00D1059 point to playback problems. Before making changes to the library, search for Windows Update from Start and install any pending updates.

If you use the classic version and the problem persists, try these steps:

1. Restore the library. Press Ctrl + M to show the menu, then go to Tools, Advanced and Restore Media Library. Confirm the operation and reopen the program after it closes. Restoring the library does not delete your songs: it resets the database that organises them, which may be corrupted.
2. Clear the cache. Go to Tools, Options and Privacy, use the button to clear the caches, then click OK. The player will rebuild these files as needed.

Try playing the content again after each change to find out which one resolved the problem. If it still will not play, check the codecs.

Codecs: check what the file needs

Windows Media Player supports MP3, AAC, FLAC and WAV audio, as well as H.264 video, among other formats. However, some content requires additional codecs for playback. Check the file format before installing extensions indiscriminately. If it is an MP4 file, it is also worth checking how to play MP4 files on Windows and Mac.

The Microsoft Store offers extensions for MPEG-2, HEVC, VP9 and AV1, as well as Web Media Extensions for OGG content with Vorbis or Theora. HEVC, also known as H.265, is commonly used in smartphone recordings, while VP9 and AV1 are used by video services such as YouTube. Install the relevant extension and try again; if playback still fails, restart your computer before continuing.

There is a caveat with Windows 11 24H2 and later versions: the AC-3 codec is no longer included. However, it may be preinstalled by the manufacturer or retained when upgrading from an earlier version that already had it. You can check your version by searching for About your PC and reviewing the Windows specifications.

Error 0xC00D0FEA: connection issue or corrupted file

Error code 0xC00D0FEA can indicate a communication failure with the server hosting the content, although it can also appear if a file you received is corrupted. If you are streaming content online, check your connection and, if the Wi-Fi signal is weak, move closer to the router or use Ethernet.

On a local network, check that the devices are connected to the same router or switch and that the computer sharing the file is still switched on. If your connection is working, the problem may lie with the content source.

Error 0xC00D11CD: file, app or database issue

Error code 0xC00D11CD is less specific: it indicates a problem with the file or the app, and may also be related to a missing codec. After checking formats and updates, you can manually rebuild the classic player’s database:

1. Close Windows Media Player.
2. Press Windows + R, enter %LOCALAPPDATA%\Microsoft\Media Player and click OK.
3. Delete the files in that location, but keep the folder.
4. Reopen the program and check playback.

This operation affects its database, not the original media files.

If the problem persists, check your audio drivers. They are normally updated through Windows, although in some cases you will need to download the latest version from the manufacturer’s website and follow its instructions. As an additional check, a full scan with Windows Security or another antivirus tool can detect malicious software; this is a less common possibility, not the first likely cause.

Error 0xC00D1163: DRM protection

Error 0xC00D1163 is linked to DRM protection, which controls permission to play certain content. If you have a legitimate copy or the file should not be protected, first install any pending Windows updates.

Then, depending on your version of the player, you can try repairing it through Settings, Apps and Installed apps, or removing and re-adding the classic player through Optional features. These steps are intended to fix a malfunction, not to bypass content permissions.