You can remove a file's encryption by decrypting the file.
How to decrypt a file:
In the Drive app, select an encrypted file in the display area.
Use one of the following methods:
Click theicon in the toolbar. Click on in the menu.
Selectfrom the context menu.
If the Enter Guard security password window opens, enter the Guard security password.
You can define how long the Guard security password should be valid. To do so, enable . Select a value from the list.
In the Guard security settings, you can define a default value for the time range.
Parent topic: Encrypting or Decrypting Files