I have read numerous posts on this same issue and searched Microsoft's
knowledge base and there are no solutions offered.

I have a web service installed on 4 machines: 2 dev servers, 1 staging
and production.  The web service works fine on 3 of the machines,
however, on one dev server, invoking the service returns a 404.  You
browse to the .asmx file and view the wsdl no problem, but invoking a
web service call returns a 404.

We tried making sure all the possible .net extensions are mapping to
the asp.net dll.  We also reinstalled the .net framework using
aspnet_regiis.

Is there anyone out there who has found what is causing this?

Thanks in advance!
September

p.s. I already posted this in the xml newsgroup - sorry for the double
post, but this group is probably a better place to post.