Are you having similar issues on sites other than qb with Explorer? That will be the key. I got very frustrated w/IE several months ago constantly redirecting me and/or with pop ups. Loaded Mozilla Firefox on both the laptop and desktop computers. Currently using laptop/Mozilla. Still get some pop ups and redirects but not nearly as badly. On desktop, got what I thought was a pop up from Mozilla about an update. Sure. Click on link and the bloody browser (mozilla) won't work on that computer any more. Uninstalled and reinstalled several times to no avail. Now I use IE on that one. The pop ups and redirects are far fewer on IE now than before.
If you're having issues on sites other than qb with IE, then you might need to update the version of IE that you are using. Or possibly just change some settings.