My wife and I just upgraded her Toshiba laptop to Windows 10. When the update was completed, our Norton programs were gone.
We removed edge as our default browser and went back to Internet Explorer 11. We went to Symantec (Norton) .com and downloaded and installed the newest version. It installed with no real problem - we simply bypassed the objections from Windows to turning off their protections. Manual update gave us 4 downloads and 4 installations successfully. All our data in identity safe and other settings carried forward successfully.