How to Fix the “Can’t Play Video” Error on Windows 10

The “Can’t play” video error on Windows 10 usually comes down to one of four things: the player does not support the codec inside the file, the Movies & TV app is malfunctioning, Windows is missing media components, or the video itself is incomplete or damaged. Start by opening the same file in another trusted player. If it works there, focus on codecs or the Windows app; if it fails everywhere, replace or re-copy the file.

Note: Windows 10 reached end of support on October 14, 2025. The operating system still works, but Microsoft recommends moving to a supported Windows release or using an eligible Extended Security Updates option while transitioning. See Microsoft’s Windows 10 support notice.

1. Test the video in another player

A different player is the fastest way to separate a Windows app or codec problem from a bad file. VLC is a useful test because it includes support for many media formats. Download it only from the official VideoLAN website.

1. Install VLC.
2. Right-click the video that triggers the error.
3. Select Open with, then choose VLC media player.
4. Let the file play and seek to another part of the video.

If the video plays normally in VLC, the file is probably usable. Continue with the codec and app fixes below. If VLC also refuses to open it, skips large sections, or stops at the same point every time, jump to the fresh-copy step.

2. Convert a healthy file to a more compatible MP4

A file extension does not tell you everything about the video inside it. For example, two .mp4 files can use different video or audio codecs. If VLC can play the file, converting it to a broadly supported MP4 profile can make playback more reliable in Windows apps.

1. Open VLC and choose Media > Convert/Save. See the VLC desktop menu guide.
2. Add the source video and continue to the Convert window.
3. Choose an MP4/H.264 profile available in your VLC build.
4. Pick a new destination filename ending in .mp4, then start the conversion.

Conversion can fix a compatibility problem, but it cannot recreate frames or audio that are missing from a corrupted download or failed camera transfer.

3. Download or copy the video again if it is damaged

If the file fails in multiple players or conversion stops with errors, get a fresh copy from the original source. For a download, delete the incomplete copy and download it again over a stable connection. For a phone, camera, SD card, or external drive, copy the file again and keep the original until the new copy is verified.

4. Repair or reset Movies & TV

If the video works in VLC but not in Movies & TV, repair the Windows app before changing the file. Microsoft’s current app repair instructions still provide a Windows 10 path.

1. Open Start > Settings > Apps > Apps & features.
2. Select Movies & TV, then Advanced options.
3. Select Repair. If playback still fails, return to the same page and select Reset.

5. Install only the codec you actually need

Microsoft notes that Windows supports many common codecs, while formats such as HEVC/H.265, VP9, AV1, MPEG-2, or OGG-based media may need an additional extension depending on the player and Windows configuration. Microsoft also warns against installing random all-in-one codec packs from untrusted sites. Check the Microsoft codec FAQ and use Microsoft Store or the codec provider’s official site.

If one MP4 plays and another does not, do not assume the .mp4 extension proves they use the same codec. The container and the encoded streams are separate.

6. Check for the Media Feature Pack on Windows 10 N

If you use a Windows 10 N edition, core media technologies are not included by default. Microsoft says the Media Feature Pack is available as an Optional Feature.

1. Open Settings > Apps > Apps & features > Optional features.
2. Select Add a feature and find Media Feature Pack.
3. Install it, then restart Windows before testing the video again.

Which fix should you try first?

• Only one file fails: test it in VLC, then re-download or re-copy it if it fails there too.
• The file works in VLC but not Movies & TV: repair or reset Movies & TV, then check whether a specific codec extension is required.
• Many media files fail on Windows 10 N: verify that the Media Feature Pack is installed.
• The file plays but stutters or freezes: also review Microsoft’s Windows video playback settings, especially if multiple monitors use different refresh rates.

In most cases, the quickest diagnosis is simple: if another player can open the video, the file is probably fine and Windows needs an app or codec fix. If no reputable player can read it, replacing the file is usually more effective than repeatedly changing Windows settings.