# iTunes launch errors caused by QTMovieWin.dll iTunes launch errors caused by iAdCore.dll.Removing and reinstalling iTunes and other software components.iTunes launch errors caused by QTMovieWin.dll.Scroll down or click the further information link for additional help with installing or fixing any post-install problems, or review the list of support documents at the end in case one of them may help you.
Some may not apply to your computer, but if they do you may save yourself some work over the full removal and reinstallation instructions given in the second box.
The key steps are in various boxes below. The aim of this user tip is to provide iTunes removal and repair steps along with related advice all in one place, and to help avoid a complete reinstallation where it is not necessary.
