Backup says completed but stops at 78%

Not sure if my backup completes or not;  I don't think it does.

Windows 11 Home; Norton 360.  Backup on specified folders (Docs, Downloads, Desktop, Pics, Music).  This is a "new" backup as I recently built a new PC and moved existing data drives from old PC to "new" one.

When backup runs, it never runs to 100%;  I've tried at least 5 times.  Each subsequent time, if finds more files to back up but only 5-10 files.  

Am frustrated with Norton Backup - I've never encountered this problem and nothing I do seems to make a difference.  So, I'll run it one more time (1st time since two days ago) and report:

  • it picked up a few new files
  • it picked up my Quicken modified files
  • it picked up a handful of music files that hadn't been backed up in the previous attempts
  • it says Successful but finished at 78% (see attached)

I've never seen this finished/but not REALLY finished situation.  What's going on?2022 10 30 Backup.jpg