>>>
>>>
>>>0x800a139e - Microsoft JScript runtime error: ASP.NET Ajax client-side framework failed to load.
>>>
>>>
>>
>>Could someone - who knows - explain to me, what specifically is "ASP.NET Ajax client-side framework"? Is it a particular .js file? if so, which one?
>
>It's a whole bunch of files. If you use Nuget Package Manager and Download Microsoft.AspNet.ScriptManager.MSAjax you'll get 11 .js files. Try it in a new, empty web forms application and it adds these to a Scripts/WebForms/MSAjax folder.
Thank you. This sound like something I should to do to better understand how it all works. You, I think I mentioned it already in one of the messages, the problem only happens when I use Form Authentication. If I change the web.config to Anonymous Authentication, no problem.
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