How to set a password to start the Mozilla Firefox browser?

Question

Browsers

How to set a password to start the Mozilla Firefox browser? The master password blocks only certain parts of the browser, and most of the plugins that extend its functionality are no longer supported.

Answer 1

1. Create a new user with a password.
   
2. For firefox.exe, restrict launch rights to the created user.
   
3. Create a shortcut for firefox on your desktop. In the properties of the shortcut, specify which user to run as.
   

Or use "Group Policies".

Answer 2

1. running Firefox on what OS?
2. Firefox ESR is much less likely to require plugin changes