Administrators can use group policy to perform most of the actions. See this KB Article: https://support.microsoft.com/en-us/kb/927367
HKLM\SOFTWARE\Microsoft\Windows Defender\Scan\DisableRemovableDriveScanning
To enable set the value to 0 - to disable set to 1
From the control panel, click on Programs and Features ... find the crawler toolbar and uninstall it. Restart your computer to complete the uninstall.
***NOTE: You may also need to check "Web Security Guard" when the uninstall wizard opens.