Problem with read and set user permission on Win10

[Chriss]

Hi!
I need some help about set permission rules for a user account on win10 in my network.

Here are my questions:
Is there any possibility to read out, or to show , export for later import any user credentials or access setup in win10?

Our windows are installed with MS AutoPilot and sometime I have to install an old version of FireFox, the v3.0 but many times
there is a problem to run the setup eve if I run it as admin.
If FireFox installed and I run it, I get some error does the FireFox can not access to some path but not mentioned to which path.
But it is a short description does they is maybe a problem to accessing the profile folder or the user has no access to it.
This is not true.
FireFox crash after this error msg.

If I install the FF under my admin account everything is ok.

How can I find out lets say what permissions are enabled, disabled or access restrictions path are set  for my user account which is a regular user account, not an admin account?

Is it possible to restrict a user not to start an out-dated app or old app in windows 10 ?

Any advice would be nice.

Thank you.