title: Can't install IIS7 and ASP.NET 3.5 on Win7 64-bit
body: <p>Using Win7 32-bit for 3 months and didn't have problem with developing any .NET-based applications including ASP.NET apps.</p>
  
  <p>Just upgraded my laptop's RAM 3 days ago and switched to 64-bit version of Win7.</p>
  
  <p>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.</p>
  
  <p>When I try to register ASP.NET using <code>aspnet_regiis -ir</code> in <code>c:\Windows\Microsft.NET\Framework64\v2.0.50727\</code>, a dialog box shows with this error message: </p>
  
  <blockquote>
    <p>"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".</p>
  </blockquote>