ASMX operation 404s, but ASMX service description doesn't, url routing issue?

Question

So I\'ve found myself with a conundrum. We have some old asmx web services in our app that have worked fine for ages.

All of the sudden they stopped working on th

Answer 1

I've just encountered the same error, after stumbling over this SO entry:

Handlers returns 404 error on IIS7.5 integrated pipeline

and tried the solution of adding the asmx handler to the web.configs webServer section all was well: