doPostback failing in IE 11+ Windows 8.1

We have created a new “ie11.browser” file in C:\Windows\Microsoft.NET\Framework\v4.0.30319\Config\Browsers and now ASP.NET is working correctly. After creating the file we run “aspnet_regbrowsers -i” and restarted IIS.
We simply copied the capabilities of IE6-9. We do not know if this is accurate, but ASP.NET is now working with Explorer 11 running on Windows 8.1
Our ie11.browser file looks like this:

<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>

Leave a Comment