Hotfix for High CPU usage in Explorer.exe due to corrupted .wav files in Windows 7, Windows Server 2008 R2

You've some corrupted .wav files in a folder on a computer that's running Windows 7 or Windows Server 2008 R2. When you open folder, you encounter following problems: “Computer responds slowly, You cannot perform any other operations, You experience high CPU usage in Explorer.exe process”. Note To temporarily resolve these problems, restart Explorer.exe process. You […]

You've some corrupted .wav files in a folder on a computer that's running Windows 7 or Windows Server 2008 R2. When you open folder, you encounter following problems: “Computer responds slowly, You cannot perform any other operations, You experience high CPU usage in Explorer.exe process”. Note To temporarily resolve these problems, restart Explorer.exe process. You may also encounter problems when you use other applications or operations to open corrupted .wav files. For e.g., if you try to use Windows Media Player to open corrupted .wav files, Windows Media Player stops responding. Additionally, Wmplayer.exe process generates high CPU usage. “When a folder that contains corrupted .wav files is opened, Windows Explorer calls the Media Foundation (Mf.dll) function to extract metadata from .wav files. However, the Mf.dll function enters an infinite loop when extracting the metadata. A supported hotfix is available from Microsoft,” KB976417.