How to encrypt a folder in Windows 7 and backup the encryption certificate

How to encrypt a folder or file

  1. Right-click the folder or file you want to encrypt, and then click Properties.
  2. Click general, then advanced
  3. Select the "Encrypt contents to secure data" check box (see below if it's grayed out) *
  4. Click OK, then click OK again
  5. Back up your encryption certificate (see below)

How to back up your EFS certificate

  1. In the start menu serach box, type certmgr.msc
  2. Press enter
  3. In the left pane, double click Personal
  4. Click Certificates
  5. In the main pane, click the certificate that lists Encrypting File System under Intended Purposes. (You might need to scroll to the right to see this.)
  6. If there is more than one EFS certificate, you should back up all of them.
  7. Click the Action menu, point to All Tasks, and then click Export.
  8. In the Certificate Export wizard, click Next, click Yes, export the private key, and then click Next.
  9. Click Personal Information Exchange, and then click Next.
  10. Type the password you want to use, confirm it, and then click Next. The export process will create a file to store the certificate.
  11. Type a name for the file and the location (include the whole path) or click Browse, navigate to a location, type a file name, and then click Save.
  12. Click Next, and then click Finish.
  13. Check to make sure the backup copy of your EFS certificate is within the users folder so it will be backed up by Crashplan.

How to decrypt a folder or file

  1. Right-click the folder or file you want to decrypt, and then click Properties
  2. Click general, then advanced
  3. Clear the encrypt contents to secure data check box, click OK, and then click OK again.

* What to do if encryption is grayed out

  1. Go into regedit  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem
  2. In the right pane, right click on NtfsDisableEncryption and click on Modify.
  3. Type 0 and click OK
  4. Close regedit
  5. Restart computer