Q: iTunes Error 7 (Windows error 127) after installing iTunes 64-bit for Windows

Thank you so much for this solution! It worked for me, too.

FYI: Windows users who have the Computer and Recycle Bin icons on their desktop can use those shortcuts instead of going through the folders as suggested in the article (I'm referring to STEP 2, part 1, "Choose Start > My Computer". You can use your "My Computer" shortcut icon if it is on your desktop. Also, STEP 2 parts 13 to 16, you can just use the recycle bin icon if it is on your desktop and empty the recycle bin. It really is the same thing, LOL!)

This thread saved me much frustration. Uninstalling everything Apple then rebooting and reinstalling iTunes did it for me. I also cleaned up my Registry where I did find a few residual iTunes references after the uninstalls. Troubleshooting issues with iTunes for Windows updates provides a good summary.

I followed the instructions noted by Sabrina Gordon above - have done it 3 times without success.

I then followed HT1925 on the Apple Support website removing, as far as I can find, every trace of Apple from my PC, including iCloud, iDrive and any folders related to Apple, then emptying the Recycle Bin.  I then restarted the PC and downloaded iTunes again - but no success - iTunes will still not reload.  It is weeks since I could update my iPhone.

Apple products are very, very good when they work - but horrible when they don't.

Apple this has been going on since 2010 according to this support site - PLEASE SORT IT OUT!

I have also tried everything on this thread without success.. turns out all i needed to do was disable my avg.. all is fine now after hours of trying different methods. Do you have anything that could be blocking itunes like security programs?

In response to Emmzz246 I use Norton 360 rather than .avg and could find no reason for 360 to block iTunes or any relevant record in it's log.

However,following the suggestion of kencameron1949 i went to the link "Troubleshooting issues with iTunes for Windows" and found that useful.

It was an issue with iAdcore.dll and as simple as going into the ...\ProgramFiles(x86)\iTunes deleting iAdCore.dll and then going to "Control Panel\Programs and Features\iTunes" and right click "Repair".

My thanks to Emmzz246 and kencameron1949 - I can now update my iphone after a couple of months

I have the same problems  I did what Sabrina suggested but I was NOT successful I do not know what else to do,any other suggestions are very welcome. I do not  have any Apple´s applications in the computer at the moment I deleted all in the sequence  suggested.  I tried three times

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 the 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.

tt2

I tried that three times still in the same boat !!!!!

I have the same problems  I did what Sabrina suggested but I was NOT successful I do not know what else to do,any other suggestions are very welcome. I do not  have any Apple´s applications in the computer at the moment I deleted all in the sequence  suggested.  I tried three times

Thank you !!! You're solution is very simple and direct and more importantly works !!! Finally I can update my iphone...

I deleted the C\Program Files\\iPod\\bin\\iPodService.exe and I still cannot load iTunes.  I tried Ccleaner but it says there are no errors.  How did you get the ccleaner to look for iTunes related Registry Errors?

As above.

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 the 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.

tt2

QTMovieQin.dll aint their

I had to speak to iTunes in the end (1 and a half hours later!!) and it turned out the the update was incompatible with my drivers and gave me an alternative version to download.

After uninstalling iTunes through the steps mentioned in this forum and them removed all traces of the old version, i installed iTunes through the following link iTunes 12.1 for Windows (64-bit — for older video cards)

I have spent 10 hours over two days uninstalling everything, rebooting, deleting directories, etc., etc., etc., everything I have read elsewhere. Time and time and time again, continually getting error 7 each time. And FINALLY! I downloaded the version you included, and FINALLY got iTunes to install. What a waste of time over the last two days - but THANK YOU for posting this. I can't believe Apple really makes it this difficult to keep the software that their customers use up-to-date.