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Configuring ASP.NET 1.1 websites on IIS 7.0

If you want to run your existing ASP.NET 1.1 websites under .NET Framework v1.1  please read this post Configuring .NET Framework 1.1 on windows vista and follow the below steps.

1. Open IIS 7 by going through Control Panel/Administrative Tools and please select the ISAPI and CGI Restrictions option from IIS section.


2. Allow the ASP.NET 1.1 in the ISAPI/CGI restrictions.


3. Make sure that your application pool should run in a 32-bit mode + v1.1 + classic mode.

Below are the commands using appcmd.exe tool which would do this.

appcmd.exe can be found under C:\Windows\System32\inetsrv.

  • appcmd apppool set /”ASP.NET 1.1” /enable32BitAppOnWin64:true
  • appcmd apppool set /"ASP.NET 1.1" /managedRuntimeVersion="v1.1"
  • appcmd apppool    set   /"ASP.NET 1.1" /managedPipelineMode:"Classic"
  • appcmd apppool set /"ASP.NET 1.1" /autoStart:true  (optional)

4. Alternatively you can also use this option to run your application pool under .NET FW v1.1


About the author

Kalyan Bandarupalli

My name is kalyan, I am a software architect and builds the applications using Microsoft .NET technologies. Here I am trying to share what I feel and what I think with whoever comes along wandering to Internet home of mine.I hope that this page and its contents will speak for me and that is the reason I am not going to say anything specially about my self here.

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