Web Service asmx Request format is unrecognized for URL unexpectedly ending in ‘/anything’

This short blog shows you how to resolve the error in Web Service asmx “Request format is unrecognized for URL unexpectedly ending in ‘xxxxxx’ “.

I have a .NET Web Service utilizing a class name ReceivedATA. Somehow when I am browsing it then it show the error below.

Request format is unrecognized for URL unexpectedly ending in ‘/ReceivedATA’

I have no clue of what the message is about totally. I found the link in Internet (the link is the reference). This link is saying if I disable the friendly error message than I am able to see the meaningful error.

So I open IE, choose Internet options, choose again the Advance tab then unclicked the Show friendly HTTP error messages.

Once I have done that then I see the error message below that I know how to resolve the problem. At least I know which file and which line is the issue on.

System.NullReferenceException: Object reference not set to an instance of an object.

at WebServiceCustoms.WebServiceATA.ReceivedATA() in C:\dev1\WebServiceCustoms\WebServiceCustoms\WebServiceATA.asmx.cs:line 57

Reference:

https://social.msdn.microsoft.com/Forums/en-US/dacbe7e4-b993-4325-b61c-e1fef533d810/webservice-error-request-format-is-unrecognized-for-url-unexpectedly?forum=asmxandxml

https://support.isqsolutions.com/article.aspx?id=10161

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About chanmingman

Since March 2011 Microsoft Live Spaces migrated to Wordpress (http://www.pcworld.com/article/206455/Microsoft_Live_Spaces_Moves_to_WordPress_An_FAQ.html) till now, I have is over 1 million viewers. This blog is about more than 50% telling you how to resolve error messages, especial for Microsoft products. The blog also has a lot of guidance teaching you how to get stated certain Microsoft technologies. The blog also uses as a help to keep my memory. The blog is never meant to give people consulting services or silver bullet solutions. It is a contribution to the community. Thanks for your support over the years. Ming Man is Microsoft MVP since year 2006. He is a software development manager for a multinational company. With 25 years of experience in the IT field, he has developed system using Clipper, COBOL, VB5, VB6, VB.NET, Java and C #. He has been using Visual Studio (.NET) since the Beta back in year 2000. He and the team have developed many projects using .NET platform such as SCM, and HR based applications. He is familiar with the N-Tier design of business application and is also an expert with database experience in MS SQL, Oracle and AS 400.
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