How to Encrypt a Windows File

To encrypt a folder or file

  1. Right-click the folder or file you want to encrypt, and then click Properties.

  2. Click the General tab, and then click Advanced.

  3. Select the Encrypt contents to secure data check box, click OK, and then click OK again.

Note

  • The first time you encrypt a folder or file, an encryption certificate is automatically created. You should back up your encryption certificate. If your certificate and key are lost or damaged and you don’t have a backup, you won’t be able to use the files that you have encrypted. For more information, see Back up Encrypting File System (EFS) certificate.

To decrypt a folder or file

  1. Right-click the folder or file you want to decrypt, and then click Properties.

  2. Click the General tab, and then click Advanced.

  3. Clear the Encrypt contents to secure data check box, click OK, and then click OK again.

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