How to set default browser for current users?

Question

Windows

The crux of the issue: if you export the default file associations and add them to the “set default associations...” policy, then the application policy applies only to new users. Through Control Panel Settings (open with) does not work. In general, it is only necessary to make IE the default browser for already existing employees, it is desirable that users come to each login.
Windows Server 2012r2, all Win 10 users