Did you find an SFCACHE file on your computer and wonder what program should open it? Maybe someone emailed you an SFCACHE file but you're not sure how to use it. Perhaps you tried to open the SFCACHE file but Windows told you that it could not open it.
Before you can open an SFCACHE file (assuming it's even a file format that's intended to be viewed or edited), you'll need to determine what kind of file the .SFCACHE file extension refers to.
Other types of files may also use the SFCACHE file extension. If you know of any additional file formats that use the .SFCACHE extension, please let me know so I can update this information.
How To Open an SFCACHE File:
The easiest way to open an SFCACHE file is to double-click on it and let your PC decide which default application should open the file. If no program opens the SFCACHE file then you probably don't have an application installed that can view and/or edit SFCACHE files.
Warning: Take great care when opening executable file formats received via email or downloaded from websites you're not familiar with. See my List of Executable File Extensions for a listing of file extensions to avoid and why.
SFCACHE files are part of the ReadyBoost feature in Windows 8, Windows 7, or Windows Vista and should not be opened, deleted, or moved. If you'd like to remove the SFCACHE file, disable ReadyBoost on the drive.
If you know of anything else about SFCACHE files that should be included here, please send me a quick email and let me know so I can update this page.
Tip: Use Notepad or another text editor to open the SFCACHE file. Many files are text-only files meaning no matter the file extension, a text editor may be able to properly display the file's contents. This isn't the case with ReadyBoost SFCACHE files but it's worth a try if you think the file isn't a ReadyBoost file.
If you find that an application on your PC does try to open the SFCACHE file but it's the wrong application or if you would rather have another installed program open SFCACHE files, see my How To Change the Default Program for a Specific File Extension guide for making that change in Windows.
How To Convert an SFCACHE File:
There are two main ways to attempt to convert an SFCACHE file to another file type:
- Open the SFCACHE file in its default program and choose to save the open file as another file format.
- Use a File Conversion Online Service or Software Program to convert the SFCACHE file to another file format.
The first option involving opening the SFCACHE file in its native program is preferable because it's both easier and will probably result in a more accurate file conversion. Of course if you don't have a program that opens SFCACHE files, a third-party file conversion tool (the second option) could be very useful. Remember, if this really is a ReadyBoost file (likely) then neither of the above options are worthwile to try.
Important: You cannot usually change a file extension (like the SFCACHE file extension) to one that your computer recognizes and expect the newly renamed file to be usable. An actual file format conversion using one of the methods described above must take place in most cases.
Still Having Problems Opening or Using an SFCACHE File?
See Get More Help for information about contacting me on social networks or via email, posting on tech support forums, and more. Let me know what kinds of problems you're having with opening or using the SFCACHE file and I'll see what I can do to help.