Unable to load the MicrosoftAjax.debug.js file

My ASP.NET 3.5 web application runs perfectly on my local machine and when deployed on my Windows 2008 server. However, I am encountering a javascript error that states:

Error: Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 500
Line: 4723
Char: 21
Code: 0
URI: http://localhost/ScriptResource.axd?d=e1Gld4LGHLsC4rWqevEI8zAMJKoVcCEVHBjdJIxcQLO9of6t7nNopbI1YyxJTv1QbaxN_lTSoz5Ly-VjBRHp08Mf3xxg5V9i5Z0AiXIkZRY1&t=6af1de90

After decrypting the URI using a utility, it appears that the missing file is ZSystem.Web.Extensions,3.5.0.0,,31bf3856ad364e35|MicrosoftAjax.debug.js|. Why am I unable to load this javascript file? Can anyone provide assistance?

c#asp.netjavascriptasp.net-ajax

Answer №1

Here are some potential solutions:

  1. If you haven't installed .NET Framework SP1 on your server, the 3.5 assemblies needed to generate the MsAjax file may not be found.
  2. It's possible that you deployed your web.config file with <compilation debug="true"> while IIS has been set to compile it in release mode. Check out this link for more information.

Answer №2

In the past, I encountered a similar issue related to mismatched time zones between development and production machines. When using ASP.NET AJAX to fetch a script resource from an assembly, it validates the last modified date/time of the assembly. If the production server's local time is "behind" the last modified date/time of the assembly, ASP.NET AJAX throws an ArgumentOutOfRange exception during the request processing.

Debugging this issue can be extremely challenging, especially since the problem tends to resolve itself over time.

I believe this scenario could potentially occur with a System assembly if Copy-Local is set to true.

Answer №3

During my experience with third-party web services, I encountered an issue related to a specific XML tag within the web.config file:

<extendedProtectionPolicy policyEnforcement="Never" />

Upon removing this particular tag, the error disappeared completely.

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