FIX: Internet Explorer 11 not detected correctly by .NET 4.0 framework when custom .browser files are used - by Mihail Parvanov

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ID 806542 Comments
Status Active Workarounds
Type Bug Repros 5
Opened 10/25/2013 2:31:46 AM
Access Restriction Public

Description

I had an issue with Internet Explorer 11 not detected correctly by .NET 4.0 framework.  Installing the suggested patches haven't done the trick so after digging deeper into the issue I found that although http://support.microsoft.com/kb/2836939 patch is installed on the server the browser still have been recognized as Mozilla with version 0.0 on the server. After additional research I've found that in case you have any .browser file in your site's app_browsers folder, the version detected on the server is wrong, namely Mozilla 0.0. To workaround the issue I created a custom .browser file in the app_browsers directory with the following content:
<browsers>
  <browser id="IE11" parentID="Mozilla">
    <identification>
      <userAgent match="Trident\/7.0; rv:(?'version'(?'major'\d+)(\.(?'minor'\d+)?)(?'letters'\w*))(?'extra'[^)]*)" />
      <userAgent nonMatch="IEMobile" />
    </identification>
    <capture>
      <userAgent match="Trident/(?'layoutVersion'\d+)" />
    </capture>
    <capabilities>
      <capability name="browser"              value="IE" />
      <capability name="layoutEngine"         value="Trident" />
      <capability name="layoutEngineVersion"  value="${layoutVersion}" />
      <capability name="extra"                value="${extra}" />
      <capability name="isColor"              value="true" />
      <capability name="letters"              value="${letters}" />
      <capability name="majorversion"         value="${major}" />
      <capability name="minorversion"         value="${minor}" />
      <capability name="screenBitDepth"       value="8" />
      <capability name="type"                 value="IE${major}" />
      <capability name="version"              value="${version}" />
    </capabilities>
  </browser>

  <!-- Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11,0) like Gecko -->
  <browser id="IE110" parentID="IE11">
    <identification>
      <capability name="majorversion" match="11" />
    </identification>

    <capabilities>
      <capability name="ecmascriptversion"    value="3.0" />
      <capability name="jscriptversion"       value="5.6" />
      <capability name="javascript"           value="true" />
      <capability name="javascriptversion"    value="1.5" />
      <capability name="msdomversion"         value="${majorversion}.${minorversion}" />
      <capability name="w3cdomversion"        value="1.0" />
      <capability name="ExchangeOmaSupported" value="true" />
      <capability name="activexcontrols"      value="true" />
      <capability name="backgroundsounds"     value="true" />
      <capability name="cookies"              value="true" />
      <capability name="frames"               value="true" />
      <capability name="javaapplets"          value="true" />
      <capability name="supportsCallback"     value="true" />
      <capability name="supportsFileUpload"   value="true" />
      <capability name="supportsMultilineTextBoxDisplay" value="true" />
      <capability name="supportsMaintainScrollPositionOnPostback" value="true" />
      <capability name="supportsVCard"        value="true" />
      <capability name="supportsXmlHttp"      value="true" />
      <capability name="tables"               value="true" />
      <capability name="supportsAccessKeyAttribute"    value="true" />
      <capability name="tagwriter"            value="System.Web.UI.HtmlTextWriter" />
      <capability name="vbscript"             value="true" />
    </capabilities>
  </browser>
</browsers>

Similar approach is suggested on the following article: http://stackoverflow.com/questions/18485339/dopostback-failing-in-ie-11-windows-8-1/19585339#19585339 

I would like to clarify that the issue is happening only with .NET 4.0, while with .NET 4.5 the browser and its version are detected correctly.
 
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Posted by Microsoft on 10/28/2013 at 4:35 AM
Thank you for submitting feedback on Visual Studio and .NET Framework. Your issue has been routed to the appropriate VS development team for investigation. We will contact you if we require any additional information.
Posted by Microsoft on 10/25/2013 at 2:50 AM
Thank you for your feedback, we are currently reviewing the issue you have submitted. If this issue is urgent, please contact support directly(http://support.microsoft.com)