FIX Request format is unrecognized for URL unexpectedly ending in September 4, 2007 • 1 min read Software Development Adding a new web service to an application today so that I can delay loading some web user controls and ran into this 500 Error when calling the web service: Request format is unrecognized for URL unexpectedly ending in /GetHtml Found this KB article with the fix: Add the following to web.config since GET and POST are disabled by default in ASP.NET 2.0 and greater: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 <configuration> <system.web> <webServices> <protocols> <add name= "HttpGet""> <add name="HttpPost"> </protocols> </webServices> </system.web> </configuration> If you liked this post, consider subscribing to email updates about my new posts, or sharing it on Hacker News. 📬 Weekly Dev Tips Newsletter Get my weekly newsletter with software development tips, best practices, and more. Subscribe Now Please enable JavaScript to view the comments powered by Disqus.