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Problem to write access HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Video

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First of all, I did search the entire forum but didn't find useful answer can solve my problem.

Here is my development tools and test environment information.

  • Visual Studio 2013 with Update 3
  • Windows Form desktop application with .NET Framework v2.0
  • The language I am using is C#
  • I tested with both Windows 8.1 and Windows 7 and run into same problem

I am a graphics driver engineer and want to develop some tools for internal usage. .NET Framework give me the fastest way to create a decent GUI tool and this is reason why I choose it.

As I am working with graphics driver, I need update the keys under "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Video".

However, I run into the problem with the following line of code,

RegistryKey theVideoKey = Registry.LocalMachine.CreateSubKey(theKeyStr);

The error message is:

An unhandled exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll

Additional information: Access to the registry key 'HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Video\{????}\0000' is denied.

I tried everything I think could be useful found on the forum, such as "run as Adminitrator" but it doesn't work. Please help.


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