<location path="ISRes.axd">
   <system.web>      <authorization>
        <allow users="*"/>
      </authorization>
    </system.web>
  </location>

I still have some IE11 issues on the deployment server regarding WebFlyPostManager and WebContextMenu,  but I will try to solve those before bugging IntersoftPT tech support any further.

Thank you for all the help.

Ok I switch to SmartWebResources fully:

1. I have copied all the .Resource.dll files to the Bin folder
2. Here is the IS related setup in web.config (on the deployment server)..excluding the Runtime Licens sections of course.

    <add key="ISNet.WebUI.ISRes_Registered" value="true" />    <add key="ISNet.WebUI.v3_0_5000.GroupCssStyles" value="true" />        <add key="ISNet.WebUI.WebTreeView.v1_0_1500.EnableWebResources" value="Always"/>    <add key="ISNet.WebUI.WebAqua.v2_0_1000.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebInput.v4_0_7200.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebTreeView.v1_0_1500.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebTextEditor.v2_0_1000.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebScheduler.v4_0_1000.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebGrid.v9_0_7200.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebEssentials.v3_0_1000.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebDesktop.v4_0_7200.EnableWebResources" value="Always"/>
    <add key="ISNet.WebUI.WebCombo.v6_0_7200.EnableWebResources" value="Always"/>

    <add key="ISNet.WebUI.WebDesktop.V4_0_7200.RenderingMode" value="HTML5" />
    <add key="ISNet.WebUI.WebGrid.v9_0_7200.RenderingMode" value="HTML5" />
    <add key="ISNet.WebUI.WebTreeView.v1_0_1500.RenderingMode" value="HTML5" />
    <add key="ISNet.WebUI.WebCombo.v6_0_7200.RenderingMode" value="HTML5" />
    <add key="ISNet.WebUI.WebInput.v4_0_7200.RenderingMode" value="HTML5" />
    
    <add key="ISNet.WebUI.v3_0_5000.OptimizeCss" value="true" />
    <add key="ISNet.WebUI.v3_0_5000.OptimizeCssName" value="true" />
    
    <add key="ISNet.WebUI.WebDesktop.V4_0_2007.XmlCompressionEnabled" value="true" />
    <add key="ISNet.WebUI.WebGrid.V9_0_7200.XmlCompressionEnabled" value="true" />
    <add key="ISNet.WebUI.WebInput.v4_0_7200.XmlCompressionEnabled" value="true" />
    <add key="ISNet.WebUI.WebCombo.v4_0_7200.XmlCompressionEnabled" value="true" />

BUT IE11 does not work. It manages to pass the login screen that actully has a WebDialogBox, but when it enters the page containing the treeview (Profiler.aspx) and web-combos it fails. Se attahced tow debug images. the A-image (NETWORK) doesnt show anything wrong I think. But take a look at B-image (CONSOLE). IE11 doesnt seem to find the individual Javascript functions in the SmartResources, althoug it GETs the .js files successfully. How come?

PS: After I removed compleetly CommonLibrary folder. IE11 stops on the first request to Intersoft resources:
script>InitWebDialogBox('c_wdlgLogin') 'script' is undefined
But Firefox and Chrome still work 100% ok.
So the problem is that IE11 refuses to use the SmartWebResources, while Chrome and Firefox can use them when browsing the same web site. How can that be?

I can send you a login to the system if you provide me with avalid intersoftpt emal address. Then you can test for your self.
Regards
TJ

Hi and thank you for your response.
I found the problem but I don't understand why the change is needed.
I had to add this into the header section of the html file.

     <style type="text/css">        html, body, form
        {
            height: 100%;
            width: 100%;
            margin: 0px;
            padding: 0px;
        }
    </style>

But I already had this code in a CSS flie and included that in the header section such
<link href="~/Css/mainStyle.css" rel="stylesheet" type="text/css" />
But if I do it that way the tree-view failure hapens when browsing in IE11.
To be sure I have even tried to put nothing else than this needed style into the css file. But even then the problem still happen.

mainStyle.css:

html, body, form
{
   height: 100%;
   width: 100%;
   margin: 0px;
   padding: 0px;
}

TJ