Program to encrypt a folder in real time?

Question

Copy protection

Please tell me a program for encrypting a folder in real time.
More specifically, there is a folder with a portable program that is located on the local network that users can access, you need to protect / encrypt this folder with the program so that if it is copied by another user, he could not get data from the software.
Moreover, this software needs to read / write to the encrypted folder in real time.