Are you sick of seeing previews for all of your IE9 tabs whenever you hover over the taskbar icon? Unlike Firefox, IE9 enables multi-tab preview by default. Thankfully, Microsoft gave us an easy way to disable it.
Open Internet Explorer and click the Settings icon at the top-right. From the drop-down menu select Internet Options.
Internet Options comes up. Click the General tab, then click the Settings button.
Uncheck Show previews for individual tabs in the taskbar. Click OK to save changes. Exit and restart Internet Explorer to apply the settings.
Presto! No more multi-tab previews. Instead, IE9 will only display a single preview for the tab you have open in IE9.