Greetings soupygirl1,
Since you keep getting prompts to update iTunes on your PC, you may need to resolve issues between iTunes and your security software.
Check out the following info:
"How to tell if your security software might be causing an issue
Security software created by companies other than Apple can prevent iCloud for Windows or iTunes from connecting to Apple servers or to devices. Sometimes, you might see a numeric error message when you sync, update, back up, or restore your device." Resolve issues between iCloud for Windows or iTunes and third-party security software
Be sure to visit the link to learn about which steps to take. We hope this helps!
Sincerely.