You are in the windows power shell window and decide to encrypt folder which of the following command do you use

try this script bro

(Get-ChildItem - Path C:/Folder). Encrypt ()

Explanation:

simply microsoft just use encrypt () & decrypt () words in script to act doing the method encrypting & decrypting.

but i suggest you to use the windows gui features, its more easier. just right click on your folder target, go to properties then click advanced button, checklist encrypt box.