What is the Absolute Path to a Registry Value?

Question

I am trying to update a registry key. However all I get from the numerous attempts with various coding is a 'System.ArgumentException' of 'Absolute path information is required.'

From the last example I found in documentation, the following will generate the error.

static void Test()
{
RegistryKey rkey = Registry.LocalMachine;
String [] names = rkey.GetSubKeyNames();
}

What is the current process to read and modify a system's registry?

Answer 1

@Marc George
Hi,

You could find the Windows registry information for advanced users here:
https://support.microsoft.com/en-us/help/256986/windows-registry-information-for-advanced-users
https://learn.microsoft.com/en-us/powershell/scripting/samples/working-with-registry-keys?view=powershell-7
Hope above information can help you.

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Answer 2

the key is "Windows NT", you are missing a space
this works on my system:

 using (var rkey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon"))
{
    String[] names = rkey.GetSubKeyNames();
}