Summarize:

" " Your tabs will no longer display in future sessions of Internet Explorer.
Open a session of Internet Explorer. Click on "Tools," and select "Internet Options. Click on the "General" tab, then click on "Settings" under the Tabs section. Remove the checkmark next to "Enable Tabbed Browsing. Click on "OK" twice when each option is presented. Close all open sessions of Internet Explorer, then relaunch the browser.