iTunes: An unknown error occurred (-42110)
24 Mar, 2013 Stephan 20 Comments
After transferring an entire iTunes library from one computer to another, I received the meaningless message: "An unknown error occurred (-42110)." after starting iTunes 11 on that computer for the first time under that user account.
The problem was solved by renaming the folder C:\ProgramData\Apple Computer\iTunes\SC Info
(Windows 7). I renamed it but you can delete it.