Hi
I have migrated my ASP.NET website from 3.5 framework to 4.6.2 framework (Web farm 2008 to web farm 2016)
My migrated web site (in 4.6.2 framework) was working well till Internet explorer 11 was upgraded with patchKB4486474.
But after this patch, my newly migrated website (in 4.6.2) started giving various AJAX client side java script related issues.
I am getting these issues only on Windows 7 workstation that has IE 11.
I am currently getting below errors ->
‘Sys’ in undefined
ASP.NET AJAX client-side framwork failed to load
Menu_HoverStatic is undefined
object is undefined
Surprisingly this migrated 4.6.2 website is not giving these errors in Google Chrome, Mozilla Firefox.
This error is intermittently showing up on Windows 10 workstations IE 11 sometimes.
But my old ASP.NET site which is in 3.5 (Windows 2008 webfarm) is working fine on this IE 11 with patch KB4486474.
Can you please guide me over this ? I am really not sure what to do. Is this something related with load AJAX client side framework libraries ? or something related with IE Patch?
Browser details on Windows 7 workstation ->
Internet Explorer 11
Version - 11.0.9600.19266CO
Update Version - 11.0.110 (KB4486474)
Product ID - 00150-20000-0003-AA459
Please let me know.