What is the EFSTMPWP folder and can you delete it?

Can I delete EFSTMPWP folder on my Windows computer? If you have this question, then you have come to the right place. We explain what is the EFSTMPWP folder and tell you if it is safe to delete it.



Cipher.exe is a built-in command line tool in the Windows operating system that can be used to encrypt or decrypt data on NTFS drives. This tool also lets to securely delete data by overwriting it.

When you use this built-in tool, it creates a temporary folder named EFSTMPWP on the system partition. It then more temporary files in that folder, and writes random data comprising of 0’s, 1’s and other random numbers to those files.

Once the operation is completed successfully, Cipher will delete this folder. But if for some reason, the operation is interrupted, this folder may remain undeleted.

If you find that the folder size has increased, you may safely delete this EFSTMPWP folder.

Hope you find this small bit of information useful.

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Anand Khanse is the Admin of TheWindowsClub.com, a 10-year Microsoft MVP Awardee in Windows (2006-16) & a Windows Insider MVP. Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.