404 Error in IIS 6 when loading .aspx pages (ZT)

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It is an old and common problem.

Here is a quick recap on how to solve it:

1. Make sure .NET is installed on your machine

2. If IIS was installed before .Net run 'aspnet_regiis -i' from your Microsoft.NET\Framework\vXXX directory

3. In "Internet Information Services Manager" on your server you should have "Web Sites" folder as well as a "Web Service Extensions" folder. In that folder there are some services listed there and you should have "ASP.NET v<version>" listed. The service should be set to "Allow".

Uncheck the "Show friendly HTTP error messages" in Internet Explorer settings (Tools - Internet Options ... - Advanced )