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 code and it works only for X86 machines. Can you see any reason why this is not working for x64 machines?

// This value is correct
RegistryView registryView = releaseFlags.Contains("PLATFORM_X86") ? RegistryView.Registry64 : RegistryView.Registry32;

    using (RegistryKey hkeyLocalMachine = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, registryView))
    {
        RegistryKey noModifyKey = hkeyLocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{xxxx}", true); //SL: Key Name

        if (noModifyKey != null)
        {
            noModifyKey.SetValue("NoModify", 0);
            noModifyKey.Flush();
        }
    }

Answer 1

It's my mistake in the code.

RegistryView registryView = releaseFlags.Contains("PLATFORM_X86") ? RegistryView.Registry64 : RegistryView.Registry32;

Should be as follows:

RegistryView registryView = releaseFlags.Contains("PLATFORM_X86") ? RegistryView.Registry32 : RegistryView.Registry64;