Our end users are using AVD resources of our third party suppliers (SaaS).
Currently it not possible to disable drive redirection on cliënt side by either changing the RDP(W) file, by policy or by GUI.
From security perspective it's not desirable to redirect local drives to AVD resources.
Please make it possible to disabling drive redirection by group policy (which the user's can't overruled) and by GUI on the client side itself.