Q: after downlaoding the latest version of itunes to my laptop, i get an error message that says itunes can't open because msvcr80.dll is not installed,then another dialogue box says please reinstall itunes error 7 (windows error 126) can anyone help?

Go to Control Panel > Add or Remove Programs (Win XP) or Programs and Features (Later)

Remove all of these items in the following order:

• iTunes
• Apple Software Update
• Apple Mobile Device Support
• Bonjour
• Apple Application Support

Reboot, download iTunes, then reinstall, either using an account with administrative rights, or by right-clicking the downloaded installer and selecting Run as Administrator.

See also HT1925: Removing and Reinstalling iTunes for Windows XP or HT1923: Removing and reinstalling iTunes for Windows Vista, Windows 7, or Windows 8

tt2

I have the same problem.

Fixed only after uninstalled all aplle software and downloaded and installed previous itunes version 11.1.3.8

Important: this downloading link http://support.apple.com/kb/DL1615 is not actually a 11.1.3.8 version! It is a new 11.1.4 version! I download 11.1.3.8 from another site.

It happened to me the same. I solved it by restoring the system to an earlier phase of the upgrade. I hope it helps. Greetings from Gran Canaria.

I was able to resolve the issue with the following steps:

• Uninstall Apple Mobile Device Support
• Uninstall Apple Application Support
• Uninstall iTunes
• Reinstall iTunes

iTunes then loaded and found my library. Whew!

I had the same problem - procedure recomended worked pretty good and no data was lost. Thank you!

You're welcome.

tt2

Thanks for this, worked a treat for me but oh what a wasted afternoon trying to fix this problem on my own!  Thanks again.  LL

Did all the suggestions...I still cannot access iTunes. This is so frustrating, and I don't know if I will ever be able to get my music back.  I have uninstalled and reinstalled about 4 times so far,and I still get the same errors. The worst is the message about mobile device, and telling me I don't have priveledges, lol...this is MY COMPUTER I AM ADMINISTRATOR...frustrating

Doesn't give option to run as administrator

If your account has admin rights then you can ignore that piece of advice.

Try working working through all the steps listed in HT1923: Removing and reinstalling iTunes for Windows Vista, Windows 7, or Windows 8. Try to ignore any error messages that crop up along the way, and if a particular uninstall rolls back just move on to the next one. You should be able to get to the point that you've uninstalled all that you can. Reboot. Ignore any error on reboot. Then attempt to install iTunes from the current download page. It ought to work. Good luck...

I've no personal experience of this, but in one of the threads someone has suggested the Microsoft Fixit Fix problems that programs cannot be installed or uninstalled which might help. It might also pay to disable any anti-virus software while attempting the repairs.

tt2