Missing ASP.NET Tab in IIS Management Console

On a Windows 2003 64bit machine with both .NET Framework 1.1 and 2.0 installed, you are tying to configure a website on IIS, but you are unable to find the tab to specify ASP.NET settings.

Researched turned out this being a bug that is closed as "won’t fix".

If you are gong to run IIS 32-bits on WOW64, MMC Support for ASP.Net snap-in is currently not allowed.
We are in the process of writing a KB article to document this.
In general the ASP.net tab is giving you the UI to configure the application to run different versions. You could use the specific version of aspnet_regiis.exe utility to configure this.
The utility is aspnet_regiis -i under C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727, if you want your application to run under 2.0.
There are several command switches to configure specific sites or directory only.
If you see these problems on 32-bit OS there’s a known workaround:

  • Manually run the install for ASP.NET: ASPNET_regiis -i
  • Register the dll for the MMC: regsvr32.exe "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\mmcaspext.dll" "rundll32.exe" "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\webengine.dll",RegisterAspNetMMC
  • From a command prompt run: C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\regasm.exe C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\AspNetMmcExt.dll /tlb:AspNetMMCExt.tlb
  • Change the About value in "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MMC\SnapIns\{fedb2179-2335-48f1-aa28-5cda35a2 b36d}" from {7D23CCC6-A390-406F-AB67-2F8B7558F6F7} to {7D23CCC6-A390-406F-AB67-2F8B7558F6F6}


UPDATE (5th November, 2006)
Just found this recently published KB article as official documentation: http://support.microsoft.com/default.aspx?scid=kb;en-us;919283&sd=rss&spid=8940


UPDATE (23rd April, 2008)

Tom (and Jeremy and Vandana) has a solution, check it out



Comments (8)

  1. some guy from microsoft blogged about the missing ASP.NET Tab in IIS MMC. On 32 bit systems there are

  2. Mohamed ALNAGAR says:

    God Bless Microsoft!!! another flaw in the 64 bit version of windows-.NET, it is really a disgrace

  3. nate says:

    Thanks for the post been researching this for ages.

    "won’t fix"…. brutal…….

    How about someone compiles that as a standalone exe instead of a snap-in extension! oy!!

  4. Juice says:

    I have seen this after VMWare is installed.


    backup IIS metabase using IIS admin.

    uninstall vmware

    uninstall IIS

    install IIS

    Import metbase backup.



  5. Remember this problem ? Well, Tom (and Jeremy and Vandana) has a solution     Carlo Quote of

  6. Sandip K says:

    i Did

    C:>C:WINDOWSMicrosoft.NETFrameworkv1.1.4322aspnet_regiis.exe -i

    Start installing ASP.NET (1.1.4322.0).

    Finished installing ASP.NET (1.1.4322.0).

  7. Mahesh says:

    I follwed the above procedure, but still i am unable see the ASP .NET tab in IIS.

    Can u give me any other solution.