The sfcache is a Ready Boost Cache file. SFCACHE files are part of the Ready Boost feature in Windows 7 or Windows Vista and should not be opened, deleted, or moved.
If you’d like to remove the SFCACHE file, disable Ready Boost on the drive. File extension SFCACHE files are associated with the application Windows Vista Ready Boost Cache File powered by Microsoft Corporation. Ready Boost Cache File is principally a feature in Windows Vista that permits users to plug USB flash memory devices into ports of USB 2.0 on the PC for use as virtual memory or as a cache. The advantage this offers the extension in the speed at which users can cache to a USB drive rather than caching to the hard disk. This usually speeds up the system while enhancing the overall performance. Perhaps Windows is unable to open file extension .SFCACHE you might have registry related errors or may not have the appropriate program installed. OR else it’s better to run a free registry scan.
The .SFCACHE file extension identifies Windows ready-boost cache files which allow you to plug an external disk device into your computer and then use it for virtual memory extension or as a cache, boosting your system’s performance. Incorrect associations are the cause of many file extension errors. Scan your system to prevent, identify and repair SFCACHE file extension association errors.
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