I'm trying to set up a web service, used by our software, on a customer's server. The web service requires .NET 1.1 aspx, etc..., as it was written some time ago and will not be re-written. .NET 1.1 has been installed and the application pool for the web service is set to the .NET 1.1 app pool. Our software uses http post to call the web service (default.aspx page). When doing this, a 403 forbidden is returned. I've created a temporary (html) web page in the server folder that is being accessed by the app. I can successfully browse to the html file without issue. I've looked at various "solutions" on the web to no avail, e.g. granting permissions for the NETWORK_SERVICE and machine accounts, etc... I'm sure it's going to be something embarassingly simple but my head hurts at the moment from banging it against the desk! Anyone seen something similar and resolved it? Anyone got any suggestions of things to try?