Coding⏱️ 2 min read📅 2026-06-04

How to Fix: jQuery Call to WebService returns "No Transport" error

Learn how to easily fix and troubleshoot How to Fix: jQuery Call to WebService returns "No Transport" error with our step-by-step documentat

Quick Answer: 1-2 sentences of direct conversational advice.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. 🔧 Proven Troubleshooting Steps
  3. 💡 Conclusion

The 'No Transport' error in jQuery's AJAX call to a web service typically occurs when the server does not support the HTTP request method or content type used in the AJAX call. In this case, the problem lies with the ASP.NET Web Service configuration and jQuery's AJAX settings.

🛑 Root Causes of the Error

  • The ASP.NET Web Service is not configured to support JSON data type.

🔧 Proven Troubleshooting Steps

Method 1: Changing the Data Type

  1. Step 1: Open the ASP.NET Web Service project in Visual Studio.

Method 2: Specifying the Correct Content Type

  1. Step 1: In the ASP.NET Web Service project, open the web.config file.

Method 2: Specifying the Correct Content Type

  1. Step 1: In the web.config file, update the section to include the correct content type.

💡 Conclusion

By following these steps, you should be able to resolve the 'No Transport' error in jQuery's AJAX call to your ASP.NET Web Service.

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