Encryption is a pretty strong way to protect data, the whole point of it is that if someone gets a hold of the drive, or tries to hack into the files, they can't. That high level of protection also means that when working with encrypted folders you keep a backup of the encryption key in a safe place, and are careful with how you deal with Windows and user accounts.
It's like locking something into an unbreakable box, with an upbreakable lock, and you only make sure you have ONE key that can open it to make sure only you can open the lock. Then you forget the key in your pants when you throw them away. Next thing you know, you're asking around how you can break your unbreakable lock.