ASP.NET WebForms 4.0 Site with IE11 does not load ScriptResource for PageRequestManager on Windows Server 2003

Question

I am having a problem with IE11 and ASP.NET Web Forms (.NET 4.0) that runs on Windows Server 2003. On IE11, the following script tag does not appear in the source HTML:

Answer 1

We found finally the answer from the following question:

'WebForm_DoPostBackWithOptions' is undefined in IE11 Preview

We had CSSFriendlyAdapters.browser file in App_Browsers, which caused the problem.

We had to

1) create ie11.browser file as follows:

2) And then delete __browserCapabilitiesCompiler.compiled from the bin directory.

Now everything is working fine!

I hope this helps also others who are having the same problem!