Can I fix error 0xc00d36c4 without installing anything?

If the error is caused by a missing codec, you need the HEVC or AV1 extension from the Microsoft Store. If the file is corrupt, you need a repair tool. There is no free built in Windows fix.

Will error 0xc00d36c4 appear on Windows 10 and Windows 11?

Yes, the error can appear on both Windows 10 and Windows 11 when using Windows Media Player or Movies and TV. The fix is the same for both versions.

Is error 0xc00d36c4 always a codec problem?

No. It can also appear for damaged files. If VLC plays the file, it is a codec problem. If VLC also fails, the file is likely corrupt.

Do I need to re encode the MKV to fix error 0xc00d36c4?

Not usually. For codec issues, install the missing extension. For corruption, a container rebuild often fixes playback without re encoding.

MKV Error 0xc00d36c4 in Windows Media Player: Fixes

Error 0xc00d36c4 in Windows Media Player means the app cannot play the file. The MKV uses a codec Windows does not support, or the file is damaged. Fix the right one and it plays.

What Error 0xc00d36c4 Means for MKV Files

Error 0xc00d36c4 in Windows Media Player or Movies and TV means the app cannot handle the file's format or codec. Damaged files produce it too. MKV is a container that holds many video and audio codecs, so the error is not always corruption. The file itself is fine; Windows simply lacks the software to decode it.

Test whether the problem is a missing codec or real damage. The fastest way is to try another player.

Test the File with VLC

VLC plays MKV with most codecs. If VLC plays the file, it is not corrupted. Download VLC and open the MKV. Normal playback means the error in Windows Media Player is a missing codec, not a broken file. If VLC also fails, the file is likely corrupt and you will need to repair it.

Missing Codec Extensions in Windows

Windows built-in players like Windows Media Player and Movies and TV rely on codec extensions from the Microsoft Store. Two codecs that cause error 0xc00d36c4 are HEVC and AV1.

Install the HEVC Video Extension

Windows needs the HEVC Video Extensions from the Microsoft Store to play HEVC in its built-in apps. If your MKV uses HEVC, installing this extension resolves the error.

Install the AV1 Video Extension

AV1 playback in built-in apps needs the AV1 Video Extension from the Microsoft Store. If your MKV uses AV1, install that extension.

After installing the correct extension, restart Windows Media Player and try again. If the error persists, move on to checking audio codecs.

Audio Codecs That Windows Does Not Support

DTS and TrueHD audio are not supported by Windows built-in players. Even if the video codec is fine, an unsupported audio track triggers error 0xc00d36c4. To test this, open the MKV in VLC. If VLC plays the file with sound, the video and audio are both fine and the error is purely a Windows limitation. If VLC plays video but no sound, the audio codec is unsupported in Windows. Remux the file to use a compatible audio track, or use a third-party player like VLC permanently.

When to Suspect Real Corruption

If VLC also fails to play the MKV, the file is probably damaged. Corruption happens during download, transfer, or storage. Symptoms include:

The file stops playing at a certain point
Video or audio is missing or distorted
The player freezes or crashes
Error messages appear in multiple players

When multiple players fail, a missing codec is not the cause. You need to repair the file.

How to Repair a Corrupted MKV File

If VLC cannot play the file, a container rebuild is the next step. This process scans the MKV structure and rebuilds the index, fixing playback without re-encoding the video.

Rebuild the Container

Open the MKV in a tool that supports container repair.
Run a rebuild or remux operation. This creates a new MKV file with corrected indexing.
Test the new file in VLC. If it plays, the repair worked.

If the rebuild does not work, the file may be too damaged and require re-encoding or a fresh download.

Repair Online Without Watermarks

Use mkv.repair to process your file. No watermark is added.

Preventing Error 0xc00d36c4 in the Future

Stop the error before it appears:

Install the HEVC and AV1 Video Extensions from the Microsoft Store if you use Windows built-in players.
Use VLC as your default MKV player. It handles most codecs without extra extensions.
Check file integrity after downloading large MKV files. A partial download causes corruption.
Store MKV files on stable media to prevent data loss over time.

If you still see error 0xc00d36c4 after taking these steps, test the file in VLC. If VLC works, the issue is a Windows codec limitation. If VLC fails, the file needs repair.