iTunes says that it is an unknown error when connecting to the iTunes store.
That's an error from iTunes. Try reinstalling iTunes and Quicktime.
itunes error 13010 refers to a corrupt itunes library genius file -- to resolve it remove the "itunes library genius.itdb" from your itunes folder and relaunch iTunes
This is what iTunes error 8012 says: "Error 8012 - There was a problem downloading the artwork for (iTunes item)." Click on the link below to go directly to the Apple iTunes support page:
it means an error has occored in your computer
The fix is to run itunes as administrator
iTunes error code 4550 is an error that occurs when trying to burn music to a CD. One common fix is to try burning onto a different CD.
i have the same problem and its just the internet con't connect to the itunes store.
iTunes could not connect to the iTunes Store. Maybe your Internet is off. Maybe you have a firewall that is not letting iTunes connect. Norton is vary difficult to set up for iTunes.
You uninstalled Apple's Application Support. Reinstall iTunes
como soluciono el error 4251
This denotes a problem related to connecting to the iTunes store. I'll assume you were working with your iPhone because that is the only time I've seen that error number. Contact apple and ask if there is a problem with the iTunes store or your iPhone's firmware.