I've tried to convert my FAT32 drive to NTFS but eventually got the message: "the conversion failed" (I tried it twice - same result). I also tried the Apple update in Safe Mode but that didn't work...

Thanks for all your help so far - but as a novice I need a little help on this. I've created a restore point and I feel I should do a full backup. I use an external harddrive but it is FAT rather...

Maybe I could try this. How would I go about putting in the right NTFS permissions?

This is true for me too: the applet for iTunes is generic. I'd be happy to work with regedit if necessary but I've not done it before - I'd need careful guidance!

Thanks Joergi for the idea - I've just tried but Apple doesn't seem to allow download of previous versions. So I've sent Apple Support an email. There must be many people who have done what I've...

Thanks for your help. I've been busy on other things and haven't been able to look at this again until now. The msi file in the iTunes 12.2.1.16 folder is the 12.2.1.16 version. 12.2.1.16 is the...

This is my problem too - I reverted to Windows 7 after having trouble with my track pad and keyboard in Win 10 - but now I can't update itunes (I hadn't backed up!). The installer says that the...