How to create a shared registry key for WoW64 and x64 Processes

Question

Is there some way to create a custom (WoW64) shared registry key?

By default some registry keys are shared and others are redirected (see MSDN). But I want to create a custom registry key under HKLM\Software which should be shared. I'm looking for a solution in C# (maybe P/Invoke) and WIX.

score 1 · Accepted Answer · answered Mar 10 '10 at 12:26

1

If you add the KEY_WOW64_32KEY flag to RegCreateKeyEx (or RegOpenKeyEx) you will always access the 32 bit registry.

I couldn't find this flag (nor KEY_WOW64_64KEY which is the same but for 64bit access) in the Wix source code, so you might need to use pinvoke.

answered Mar 10 '10 at 12:26

Shay Erlichmen

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Though this is possible, I'd rather create a shared key. – Michael Stoll Mar 10 '10 at 12:33
@Michael What do you mean by "Shared Key" I don't know if such a thing exists – Shay Erlichmen Mar 10 '10 at 13:21
A shared key ist a key, wich is not redirected (see the MSDN Article, I've mentioned in the Question). But I couldn't find anything else about this, so I think yours is the solution. – Michael Stoll Mar 12 '10 at 11:19

How to create a shared registry key for WoW64 and x64 Processes

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