Running the 64 bit version of IIS Express 8 RC with Visual Studio 2010

Question

I have a web app that uses the 64 bit version of SharpSvn, a managed DLL with an unmanaged dependency. It will not run in IIS Express 7.0. Switching to the 32 bit version of

Answer 1

As Santhosh points out you can set the registry key

HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\11.0\WebProjects

Add new key of type “DWORD (32-bit) Value”

Name: Use64BitIISExpress Value: 1

However, make sure to delete or rename the IISExpress directory under your My Documents folder.

That's what got the registry key to work for me, it seems that IISExpress config files which are created on first launch are different between the x86 and x64 versions.