I have uninstalled and reinstalled itunes numerous times and keep getting the message it reinstalled incorrectly stating windows Error 127.

Question

I have uninstalled and reinstalled itunes numerous times and keep getting the message it reinstalled incorrectly stating windows Error 127.  I am using windows 7

Answer 1

For general advice see Troubleshooting issues with iTunes for Windows updates.
The steps in the second box are a guide to removing everything related to iTunes and then rebuilding it which is often a good starting point unless the symptoms indicate a more specific approach. Review the other boxes and the list of support documents further down page in case one of them applies.
Your library should be unaffected by these steps but there is backup and recovery advice elsewhere in the user tip.
You may have more success if you use the advice in the Install missing components section to break down the installer into its component .msi files and install these in alphabetical order.
tt2