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Tue, 18 Aug, 2026Updated 02:33 pm IST
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VLC Player Hit by 33-Second Delay on Windows 11

Microsoft Defender issue causes frustrating lag when playing MP3 files, but a simple fix is available by reinstalling VLC or adding an exception to the antivirus software

VLC Player Hit by 33-Second Delay on Windows 11
Photo: Software: VideoLAN Organization and developers Screenshot: VulcanSphere / wikimedia (BY)

A 33-second delay is plaguing VLC media player users on Windows 11 when playing MP3 files, according to the VLC developers. The issue is caused by a Microsoft Defender problem introduced through a Windows 11 update, which quarantines the VLC plugin cache.

The VLC team claims that the antivirus software is blocking the plugin cache, resulting in the delay. This cache is essential for the media player's functionality, as it relies on plugins for codecs, demuxers, and input/output modules. When Microsoft Defender quarantines the plugins.dat cache file, VLC takes a noticeable amount of time to process its plugin system before beginning playback.

The issue was brought to light by game developer Jonathan Blow, who reported the problem and criticized the state of open-source software on Windows. However, the VLC developers fired back, stating that the issue is not with the media player itself, but rather with the Microsoft Defender update.

To fix the issue, users can try reinstalling VLC, regenerating the plugin cache, or adding an exception for the VLC installation folder in Microsoft Defender. This should resolve the problem and allow for smooth playback of MP3 files.

## What's at stake The issue highlights the conflicting priorities between Microsoft and open-source projects like VLC. With over 6 billion downloads across various platforms, VLC is one of the most popular media players in the world. The delay may be frustrating for users, but the simple fix available should provide relief.

## Background VLC has been a staple in the media player market for years, supporting six different CPU architectures and numerous hardware-accelerated GPUs. The tool provides a range of features, including media conversion, recording, internet streaming, and IPTV. Despite its popularity, the issue with Microsoft Defender has caused some users to consider alternative media players, such as Microsoft's Media Player.

The VLC team's response to the issue has sparked a debate about the state of open-source software on Windows. While some may view the delay as a flaw in VLC's programming, the developers argue that it is a result of a Microsoft Defender update. As the situation continues to unfold, users can rest assured that a fix is available, and VLC remains a viable option for playing MP3 files on Windows 11.

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