Files encrypted with EFS can only be decrypted by using the RSA private key(s) matching the previously used public key(s). The stored copy of the user's private key is ultimately protected by the user's logon password.
How do I decrypt an EFS file?
- Open Internet Explorer and from the Tools menu select Internet Options. (or, open Internet Options from Control Panel.)
- At Content tab click Certificates.
- At Personal tab, select the decryption certificate and click Remove. ...
- Restart your computer.
How do I decrypt a file encrypted by another user?
Decrypting a folder
- Right-click the folder that you want to decrypt, and then click Properties.
- Click Advanced.
- Click to clear the Encrypt contents to secure datacheck box to decrypt the data.
- Click OK to close the Advanced Attributesdialog box.
- Click OK to close the Propertiesdialog box.
