When I use google to search and attempt to create a new tab entry that tab entry hangs or IE crashes. If I disable the Avast addon then I have no problems.
mchain, yes that new tab or if a new Internet Explorer window is created it crashes,
Craigb, where do I uncheck "Enable Enhanced Protected Mode"?
CraigB, that check box was never checked.
Workaround then would be to disable and remove the AOS add-on in IE11. AOS does work in Google Chrome or Firefox without issues afaik, so you could try either to see if you get the protection you desire by switching browsers. Please consider use of Sandboxie in your browser for even more protection, see sig below, if you really want to stick with IE11.
If your AOS issue is relatively new, I'd check to see if the latest IE Microsoft security fix has something to do with it?