How to deny access to a Windows folder?

Question

Windows

There are 2 accounts: 1 - Admin, 2 - User
What is required:
1. I need the User, when trying to open a folder, to enter the password from the Admin and get access to it.
BUT! As soon as you closed it, you had to enter the password again. (as with AppLocker applications)
Problem:
By entering the admin password, the system adds rights to the User's folder and he can do whatever he wants.
Is there a solution to this problem using Windows?
#2 Question:
In SRP - there is a ban on different types of files.
I need to disable access to *.TXT files for any executable files.
So that no one can open / change / delete the file, is this possible?

Answer 1

How to deny access to a Windows folder?

Security tab - set permissions.

By entering the admin password, the system adds rights to the User's folder and he can do whatever he wants.

Well, so you enter the password to add rights. Do not enter - will not add.

Is there a solution to this problem using Windows?

It's unclear what the problem is.
There are rights - there is access.
No rights - no access.

I need to disable access to *.TXT files for any executable files.

Access rights are created for the user. In addition to the user, no one provides access, including executable files.