Norton is warning that my iOS is out of date but the phone is running iOS 17.0.3 which Apple reports as the latest version.
Could you please share debug logs for review. Steps to submit debug logs are available in in below document. https://support.norton.com/sp/en/us/home/current/solutions/v137722597
Just had the same problem:
Removed the N360 app from my iPhone
Re-install from the app store
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