You are attempting to add a new iTunes U collection...

I am also having this problem and cannot uninstall iTunes in order to upload the latest version. Why has noone from Apple Support answered this complaint???? ***??? I hate iTunes.

I am having the same issue. I receive a message that says, "You are attempting to add a new iTunes U collection but iTunes U is disabled. Would you like to enable iTunes U?" When I select Yes, a window opens behind the orginal message that says, "Importing "iTunes Music Library.xml"..." Selecting No does nothing.

I have the exact same issue. I think iTunes updated itself and now all it does is this.

I found this on another site and it worked for me. I can listen to music again!

I just had the same problem and I tinkered my way out of it. This was on a Mac, but the principle should be the same if you are using the Win version.

In the directory where your iTunes content is kept, look for the file "iTunes Music Library.xml". Delete it. It will be recreated when you get iTunes working again.

Now find "iTunes Library.itl" and replace it with a recent copy from a backup.

You will lose any changes made since the backup. Sorry.

I just got this after upgrading to Yosemite (clean install). After dismissing it rapidly about 20 times (command-period), I got a new message that iTunes had found that the .itl file was corrupted, and it dealt with the problem. Seems fine now, and my iTunes U content is ok. Possibly related, I had deleted several iTunes U titles just before upgrading.

This worked for me as well... Just keep clicking no.

This also worked for me! Thank you. Truly, just keep clicking no. It took me a bit longer than mentioned above. About 15-17 minutes of clicking.

Just to add, my issue was that I updated iTunes and noticed later (unfortunately on a flight) that my music and playlists were all gone from my phone (and iTunes). After searching on how to replace or fix your missing library in your iTunes, I found the following fix:

https://support.apple.com/en-us/HT203225

Then while updating, the iTunes U error message came up. After clicking for what seemed forever. It did work and all of my music and playlists are back! Yay!!!

I had this problem too. I hit "no" over a hundred times and finally iTunes was able to open. Keep going!