Running the 64 bit version of IIS Express 8 RC with Visual Studio 2010
iis-8, iis-express, visual-studio-2010
Solution
I have been trying to do the same thing, but can't seem to find how to launch IIS Express in 64 bit mode. The only way that I can find to debug in 64 bit mode is the following: Start IIS Express as you have above (in 64 bit mode). In your Visual Studio project Properties, switch the servers to specify "Use Custom Web Server", and put in a url. Go to debug | Attach to process, and then select your running IISExpress instance. Place a breakpoint, and debug in 64 bit mode. Have fun,
Problem
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 the assembly works fine. I installed the 64 bit version of IIS 8 RC. However Visual Studio 2010 launches the 32 bit version of IIS Express. . I can launch the 64 bit version of IIS manually with the following command: ``` "C:\Program Files\IIS Express\iisexpress.exe" /config:"C:\Users\zippy\Documents\IISExpress\config\applicationhost.config" /site:"MrDVCS" /apppool:"Clr4IntegratedAppPool" ``` In my WebProject.csproj The relevant XML seems to be `<UseIISExpress>true</UseIISExpress>`. If I edit the file in Visual Studio, the Intellisense does not offer a similar named tag for 64 bit, and it does not offer me an attribute. So how do I get Visual Studio to launch the 64 bit version of IIS Express RC?