GetSubKeyNames NullReferenceExceptuon was unhandled

Asked Jun 15 '16 at 16:48

Active Jun 15 '16 at 16:57

Viewed 109 times

I have a program that checks registry key for installed software. It was fine until recently it gets "Has stopped working" message when try to open. Seems caused by Windows updates.

Dim SoftwareKey As String = "SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products"
        Using rk As RegistryKey = Registry.LocalMachine.OpenSubKey(SoftwareKey)
            For Each skName As String In rk.GetSubKeyNames

rk.GetSubKeyNames returns NullReferenceExceptuon - Object reference not set to an instance of an object.

But the above code works fine If I target it as AnyCPU or X64. Not sure what caused this and why.

edited Jun 15 '16 at 16:57

asked Jun 15 '16 at 16:48

Newbie

Possible duplicate of [What is a NullReferenceException, and how do I fix it?](http://stackoverflow.com/questions/4660142/what-is-a-nullreferenceexception-and-how-do-i-fix-it) – René Vogt Jun 15 '16 at 16:51
Probably `rk` is `null` because there is no such registry key anymore? – René Vogt Jun 15 '16 at 16:51
Then why it works fine when compiled as AnyCPU or x64? – Newbie Jun 15 '16 at 16:53
See http://stackoverflow.com/q/5262830/1070452 – Ňɏssa Pøngjǣrdenlarp Jun 15 '16 at 17:47

GetSubKeyNames NullReferenceExceptuon was unhandled

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