Azure DevOps, Scrum, & .NET Software Leadership and Consulting Services

Free course! Predicting the Future, Estimating, and Running Your Projects with Flow Metrics

All Errors, All The Time: app_offline.htm, “The resource cannot be found”, and non-stop 404’s

This post — — saved me from spontaneous, self-inflicted baldness.

I’ve been updating over the last few days and for about 4 hours this afternoon it was totally dead.  Any aspx page that I tried to execute would come up as “404 – Resource cannot be found” even though the file was definitely there.

Turns out that there’s a special file named “app_offline.htm” that will torpedo your web app just by being in the directory.  I’m not sure where this file came from but it was in my web directory and had 0 bytes in it.  Deleted that file and everything’s back to normal.

Anyway, thanks to armanddp for the post.



Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.