Windows Internet Explorer – Script Running Slowly

Can get this message when it appears that Windows Internet Explorer (IE) seems not to be running and didn't really start it. How? Have IE running and shutdown computer without stopping IE. Then somehow on future boots, IE can restart automatically, not show a window, but occasionally give a pop-up window with the message. Fix: Use Windows Task Manager > Processes to end program iexplore.exe. Happened and worked for me. Don't end explore.exe -- that's different.