Hello, OMG its so god damn annoying when trying to load my iTunes and it says: iTunes was not installed correctly.PLease reinstall iTunes. Error 7 (Windows Error 999). I have tried uninstalling and reinstalling all programmes like 3 times, I have even done it in the order the apples website says. I have tried uninstalling everything and installing quicktime first but still nothing. I have also check NET framework is installed and updated. I am the owner of quicktime and itunes and they are both compatible. Please someone help me!!!
i've tried uninstalling it didn't work for me but not every system is the same. I fixed mine by luck, just messing around. My internet browser(mozzilza firefox added a plug in called itunes application detector I disabled it and now itunes works fine