Cloud Backup gives error message, but no files are in error

Norton 360 for Windows
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1

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Issue abstract: every now and then, Norton Backup reports an error - backup failed. It gives no details and the only options are close or run again. When I look at the backup sets, they all have green checkmarks. So I have no idea what, if anything, is wrong.

Detailed description:

Product & version number:

OS details:

What is the error message you are seeing?

If you have any supporting screenshots, please add them:

2

Hello @DanKoh
…and you scrolled thru to the end?
When I had “files failed to back up”.
The “failed files” were at the end of the scroll…failed files were protected system files.

fwiw ~ pics here

3

Hello @DanKoh
Please post your progress