See instructions to prevent the installation of Internet Explorer 11 in KB Article KKB001037. Type wusa /? in the command prompt for further details. The command below will uninstall Internet Explorer 11 silently with auto-reboot Wusa.exe is available in the following Windows operating systems and is located in the %windir%\System32 folder To uninstall Microsoft Internet Explorer 11, you may use the Windows Update Standalone Installer ( Wusa.exe), which can be used to deploy or remove Microsoft patches. See KB Article KKB001037 for more details. Failing to declare a DOCTYPE directive could causes the page to load in Quirks.') DefaultOverrideDocType, Description( 'Internet Explorer 11. This latter option cannot be denied using standard Kaseya Patch Management. DefaultRespectDocType, Description('Webpages are displayed in IE latest installed version mode, regardless of the declared DOCTYPE directive. Microsoft Internet Explorer 11 (IE 11) may deploy via Microsoft Windows update patch KB2841134 (which can be denied using Kaseya Patch Management as normal), but also via an option in Internet Explorer IE 10 and IE11 (Settings > About) to automatically update the browser. How can I uninstall Internet Explorer 11? Internet Explorer 11 was installed automatically in some of my computers even though I had denied the patch KB2841134.