Can't install IIS7 and ASP.NET 3.5 on Win7 64-bit

Question

Using Win7 32-bit for 3 months and didn't have problem with developing any .NET-based applications including ASP.NET apps.

Just upgraded my laptop's RAM 3 days ago and switched to 64-bit version of Win7.

When I'm working on installing IIS7 and .NET Framework 3.5 SP1, there's an error about not all features were installed for some unknown reason.

When I try to register ASP.NET using aspnet_regiis -ir in c:\Windows\Microsft.NET\Framework64\v2.0.50727\, a dialog box shows with this error message:

"Operation failed with 0x80070643" and after I close the dialog box, another error message on the console command shows with this message: "An error has occurred: 0x80004005 Unspecified error".

Answer 1

Configure IIS to run in 32 bit mode (assuming your apps are 32 bit mode, since that's what you originally developed on).

http://learn.iis.net/page.aspx/201/32-bit-mode-worker-processes/

Try running aspnet_regiis after that is done. Use the 32 bit version of aspnet_regiis.