1003: W3SVC event binding failure invalid URL
The IIS World Wide Web Publishing Service (W3SVC) is responsible for managing the HTTP protocol and HTTP performance counters. An IIS web site is a unique collection of web pages and web applications that is hosted on an IIS web server.
Event 1003 is generated when the W3SVC did not register the URL prefix for a site. The URL prefix and the site are specified in the message. The URL may be invalid.
How could you resolve this situation?
Make sure all the URLs specified for your application are valid. Then restart the site.