SetValue 64bit machine registry

Question

I want to set a value for \'NoModify\' in below registry path. \"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\XXXX\"

I am using below

Answer 1

You should open base key in this way.
It works for me.

var rk = Microsoft.Win32.RegistryKey.OpenBaseKey(Microsoft.Win32.RegistryHive.LocalMachine, RegistryView.Registry32);
    if (Environment.Is64BitOperatingSystem) {
        rk = Microsoft.Win32.RegistryKey.OpenBaseKey(Microsoft.Win32.RegistryHive.LocalMachine, RegistryView.Registry64);
        var val = rk.OpenSubKey("SOFTWARE\\Pourab\\sanjande", true);
    
        val.SetValue("test", "testvalue");
    }