ASP.NET 2.0 Returns HTTP 404 on existing page

[Peter Strøiman]

Hi.

I have a web project I have been working on, and it used to work, but now it
reports a 404 error on pages that do exist.
Even if I allow directory browsing on the web application and see the name
of the file I wish to see, and click it from there, it gives me a 404.

I tried removing .NET from the IIS and reinstalling it (aspnet_regiis -u
then -i). No help

By a google search, I can see that I'm not the only person with the problem,
but apparently, noone has the answer.

I'm using .NET verion 2.0.50215

Thanks in advance,
Peter Strøiman

 

[Peter Strøiman]

I discovered one detail. If I modify web.config so that it's no longer
valid, I get a "correct error message" saying that the web.config is
invalid.

 

[Peter Strøiman]

Argh

Found out the problem.

A small file named app_offline.htm had mysteriously appeared in my project.
The very existence of that file causes the web site to be taken offline.

Pete