Server Application Unavailable in IIS 5.1

I encountered this error while deploying an ASP.NET website to IIS 5.1 on Windows XP SP2. It’s really been a head hitting issue to track it down until I got something interesting after a lot of Googling exercise that I would love to share with you. But before that please allow me to explain what it took for me reaching at the resolution. I uninstalled the .NET framework, restarted the system and re-installed it… No luck. Following another tip I went through the Web.Config file and changed the Authentication Mode to “None” but no luck though. Also gone through the event viewer to track down the issue where I got another error – “aspnet_wp.exe (PID: 664) stopped unexpectedly“. Fortunately I landed on this page which took me to the divine:

Thanks to Sachin Shanbhag for sharing this tip on stackoverflow.

The problem was having multiple .NET frameworks installed on that system. I uninstalled all the previous versions using :

aspnet_regiis.exe ua

By default it will be found at %windir%Microsoft.NETFramework.

After the uninstallation I installed the version of 2.0 using:

aspnet_regiis.exe i

Hope this solution help somebody ­čÖé

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