Hello Dave Lee, welcome to Microsoft Q&A forum.
I understand you need help with Norton 360 installation after your old version expired.
When a Norton subscription expires, the program disables itself entirely until reactivated. To get Norton working again, you'll need to either renew your existing subscription or install with a new product key.
Since Norton 360 is a third-party product with its own licensing and account system, please visit Norton's support site, as they can best assist with subscription renewal and product-specific installation steps. If you run into Windows-specific errors during installation (error codes, compatibility warnings, etc.), feel free to share those details here and I can help troubleshoot the Windows side.