Norton 360 ver. 25.5.10141 (build 25.5.10141.934) no longer supports previous local backup sets

Well, earlier today my v25.5 recognized my local backup sets,

Maybe, my old ext hdd is causal. I’ll need to create new local backup on newer ext ssd…as test.

Edit: and now after created new local backup on my old ext hdd

Maybe, my old ext hdd is flaky or my Norton 360 is flaky.
Note: my old ext hdd is old.

I’ll create new local backup on newer ext ssd…as test.

Edit: my 25.5 recognizes recent local backup sets with old hdd disconnected

My 14 TB drives are less than a year old. I think it’s Norton and Tech Support basically confirmed it.

I hear ya’.
I have my Haselo backups on newer ext ssd’s.

As a loyal Norton user and advocate for over 30 years, I was so happy to see Norton resume capability to backup to local sources.
I recently attached a USB drive with a May 2025 backup on it. Auto-synch was enabled and it accomplished that with no problem. However, I put in a different FULL WD USB 2TB drive with an Acronis backup and a partial Norton backup from Feb 2025. Norton Backup recognized the backup but kept spinning until I restarted the computer. Perhaps this was because Backup was unable to auto-sync a full drive).
I decided to reformat the drive and began a full (C and D – about 1.5 TB total) backup. That was over 20 hours ago! I’m now only at 66% done, with only 831GB transferred to the drive. Norton Backup seems to update in 12% increments until at 60% and then in 6% increments. I probably could have manually copied the entire 1.5GB to the disk by now…
EDIT – from 4:42pm to 5:42pm, Backup transferred ONLY 16GB to the backup drive (about 44MB/sec)!! This is using a USB 3.0 slot with a cable purchased within the past year. The WD specs show using 3.0 USB should provide at least 10 times that transfer speed.

I’ve basically seen 1 TB taking about 24-36 hours since January.

I rebooted without the external drives mounted and all of the backups, which didn’t show with them mounted, showed up as disconnected. I also got several errors of unable to start the various backups which indicates that they were all changed by the recent update to automatic (not what I had them set to).

I’m now in the process of deleting several of them to try to recreate them. Before this I tried to create a couple and they didn’t back anything up, just accessed the disks for 45 minutes plus, but only had a single file within the backup set folder.

I created a new backup. After a couple of hours it doesn’t show up in the app and the folder remained empty. Today it still doesn’t show up in the app but the folder is not empty. So I have a backup I cannot access, how useful is that?

Well ~ fwiw: my test backup set from two days ago on newer ext ssd shows up. My Backup [4]
The two from three days ago are on an older ext hdd that loses it’s power light intermittently.
My Backup [2]

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The two from three days ago are on an older ext hdd that loses it’s power light intermittently…USB Type A
older ext hdd

Norton 360 recognizes my newer ext ssd USB Type C My Backup [4]