Ctrl-E key combination allowing Bing searches

Hi.  Having a bit of a problem with a kiosk machine that is allowing users to escape from the company webpage by hitting Ctrl-E.  The combination brings up a Bing search which allows you to type and then does a Bing search that brings up clickable links.

How do I disable this?

I'm running IE 11 on Windows 8 with build 2.00.049 of Inteset Secure Lockdown v2 - Internet Explorer Edition.

I've clicked every box there is in IE options and it doesn't block that key combination.

Any help would be appreciated.

Thank you.

Please download and install the latest release of Secure Lockdown - Internet Explorer Edition.

Thank you.  We're mostly back up.  Doesn't function quite like before (new tabs instead of new windows, etc.), but we've got it mostly configured like it was before.