Restoring the ASP.NET tab in IIS

Written by Sam McGeown
Published on 4/4/2008 - Read in about 1 min (124 words)
Published under Microsoft #.NET #ASP.NET #IIS #IIS

If you’ve logged onto the properties for your IIS install and found that the ASP.NET tab has mysteriously disappered, you can try a couple of things.

Firstly, try re-registering ASP.NET with IIS using the ASPNET_REGIIS.exe located in the .NET installation folder:

c:\WINDOWS\MICROSOFT.NET\framework\\aspnet_regiis -i


Chances are though, that it won't work, and that you can try and number of command using aspnet_regiis.exe or even uninstalling and reinstalling .NET and you won't actually fix the problem. (Note: on x64 systems this could be a different problem, Google again with x64!)

This was solved by switching a flag (Enable32BitAppOnWin64) to false in the IIS metabase:

cd c:\Inetpub\AdminScripts\

cscript.exe adsutil.vbs set W3SVC/AppPools/Enable32BitAppOnWin64 FALSE

You should then be able to see the ASP.NET tab restored in the site properties.

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