HT1926 I installed the itunes update on my regular PC. The update failed and produced an error in MSVCR80.DLL I spoke to an apple tech about it. He blames Microsoft for the error. I did the same update on another PC and it produced the same error. Itunes

Question

The iTunes update is causing a problem on PC's resulting in an error pointing to MSVRC80.DLL. I called Apple Support they blame Microsoft.....(What a surprise!).
I did a second update on another pc and it produced the same problem with the same DLL file. Apple still says it's not their problem. Unfortunately until they acknowledge the problem and correct it iTunes is no longer functional. That's too bad but Windows Media Player works fine.
Apple, own up to the problems you create. Don't pull an Obama!
When enough people have the problem it will force Apple to correct it. Everyone on a PC using iTunes who try the update will have this problem.

Answer 1

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 (if this won't uninstall move on to the next item)
Bonjour
Apple Application Support
Reboot, download iTunes, then reinstall, either using an account with administrative rights, or right-clicking the downloaded installer and selecting Run as Administrator.
The uninstall and reinstall process will preserve your iTunes library and settings, but ideally you would back up the library and your other important personal documents and data on a regular basis. See this user tip for a suggested technique.
Please note:
Some users may need to follow all the steps in whichever of the following support documents applies to their system. These include some additional manual file and folder deletions not mentioned above.
HT1925: Removing and Reinstalling iTunes for Windows XP
HT1923: Removing and reinstalling iTunes for Windows Vista, Windows 7, or Windows 8
tt2