Rajeev Pentyala – Microsoft Power Platform

Hi,

You may come across below error after you deploy a web service application on IIS and try to browse the .asmx file.

Could not create type error

Fix :-

Below are few reasons that cause this issue

• Check your Application Pool of your hosted site is of .Net Framework 2.0 or higher

App pool framework

• Verify all your web service  methods preceded with [WebMethod] tag
• Add a Namespace tag to your web service class; (It should mostly resolve the problem)
  • Go to “.asmx.cs” file and set Namespace & Name
  • ‘Name’ value should match with your class name; In my case its “MyService”

[WebService(Namespace = “MyDomain”, Name = “MyService“)]

public MyService TelefonicService : System.Web.Services.WebService

{

[WebMethod]

public string HelloWorld()

{

return “Hello World”;

}

}

• Clean, rebuild and deploy the web service

Below is a useful article that talks about the same issue

Link

Hope it helps 🙂