Take the 2-minute tour ×  I'm trying to configure Custom Errors
in IIS6.  I select the 404 error, set the dropdown to "URL,"
then enter this as the URL "/404.aspx"  When go to:   It finds
404.aspx, but doesn't process it as a .Net page -- it tries to
serve up the source as an XML file, then fails because it won't
parse.  404s work fine on .Net pages because I set that in the
CustomErrors element of the web.config. But for non-.Net
resources, I have to use IIS errors, and it refuses to just
redirect to the 404 page. It's trying to serve it up the source
code, essentially.  share|improve this question  8 Answers 8  Do
you have the correct extensions enabled in IIS6? In the IIS
manager, go to Web Extensions (usually the last item in the
left-hand navigation tree) and make sure that all the
appropriate ones are enabled (usually .NET). Otherwise, this is
exactly what will happen.  share|improve this answer There's
actually nothing in the Web Service Extensions folder, which is
odd (it's not my server, actually --