Reading the registry and Wow6432Node key
64-bit, c#, registry, wow64
Solution
If you mark you C# program as x86 (and not Any CPU) then it will see `HKEY_LOCAL_MACHINE\Software\Wow6432Node\App` as `HKEY_LOCAL_MACHINE\Software\App\`.
A .NET program for Any CPU will run as a 64-bit process if 64-bit .NET is installed. The 32-bit registry is under the `Wow6432Node` for 64-bit programs.
Problem
I have some code that reads the registry and looks for a value in `HKEY_LOCAL_MACHINE\Software\App\` but when running on 64-bit versions of Windows the value is under `HKEY_LOCAL_MACHINE\Software\Wow6432Node\App\`. How should I best approach this? Do I need a 64-bit installer or should I rewrite my code to detect both places?