Windows 10: Restore points being deleted

Hi folks, for reasons I can't explain my restore points keep getting deleted despite having System Protection turned on.

I first notice the missing restore points earlier this week so I created a manual one and now it's gone too. There were no Windows updates to my PC between now and then. And between when I create the manual restore point and noticing it now missing was only 3 days.

Anyone else seeing this? Thoughts?

System specs below (system #1). Latest Windows version below my avatar. Non-insiders.

:)

 

How to delete inactive System Image Restore Points in System Restore

Windows 10 64-bit.
When I click "show more restore points" in System Restore I see a bunch of old "system image restore points" that were deleted in past and do not correspond to any currently active restore points. Clicking any of these old restore points, I simply get an error message saying they could not be found, and to select another restore point instead.I would like to delete these restore points listings but have been unable to do so.
So far, I have tried steps mentioned below without any luck :

Disk Cleanup through (C Properties
Disable System Protection (OFF and ON) in System Protection for OS (C
Disk Space Usage to minimum (slider button all the way to the left then 'Delete all restore points for this drive'),
Delete all shown Restore points in CCleaner (the problem ones do not show here),
Reset Windows Backup to Default in Windows 10 with 'Reset_Windows_Backup.bat' utility.

Any suggestions highly welcome.

 

How to delete inactive System Image Restore Points in System Restore

I know of no easier way to delete them, so here are the instructions.

A System Image restore point is describe as type 'Backup'.





First, go to Settings > Backup & Restore > Recovery and select the 'Restart now' button in Advanced Start-up.





When you get Advanced Start-up, select Troubleshoot, then Advanced Options, then Command Prompt.





You will be asked to choose an administrator account and supply it's password, then the Command Prompt will open.

Type the commands DISKPART then LIST VOL and EXIT to see a list of all drives, in this example the Windows system is on the C: drive, yours may have a different letter. Whatever the letter is, type it followed by a colon to switch to that drive, in this example I typed C:





Then use the CD (change directory) command CD System Volume Information\WindowsImageBackup

Use the DIR command to check you are in the right folder, then use DEL to delete the contents of each of the Catalog and SPPMetadataCache folders.





Youn can now close the command prompt window (or type EXIT) to restart the PC and go back to Windows.

All System Image Restore points of type 'Backup' will now have gone.

 

Windows 10 system image restore points unable to delete

Have deleted system image backups using the windows 10 suggested method. But 2 system image rstore points are still listed under other backups. Have tried all the suggested methods on the net and from the microsoft community, but the system image restore
points remain. Even after deleting all but the last normal restore points. I guess I can just ignore them. Would appreciate any advice as nothing seems to remove them.