You've got 7 partitions on Disk 0. It is a UEFI (Unified Extensible Firmware Interface) install because there is an EFI partition. That would be more clear had you double-clicked the separator line in the header...
 partition or a leftover WinRE from a prior Windows version. Leftovers are emptied of their recovery tools. Shift+R****estart reboots to a functioning WinRE at the "Choose an Option" screen. Otherwise, it returns to Windows.
- A possible WinRE.
- An EFI (Extensible Firmware Interface) partition that holds boot files.
- The mysterious MSR (Microsoft System Reserved) partition that doesn't show up in Disk Management.
- The Windows partition (C:).
- Looks like a manufacturer provided recovery partition to get back to the factory install state.
- A possible WinRE.
- A possible WinRE.
(1) Have you tried Shift+Restart to see what happens?
(2) Right-click Start, & select Windows Powershell (Admin) or Command Prompt (Admin),
& enter "ReagentC /Info"...
I think you will not have one that works &/or Windows does not know you've got it. But I still lean toward it is a shadow copy problem that thwarts the completion of your backup.
Edit 11/18/18:
Here is something interesting...
Windows 10 1803 update caused system image creation to fail
If that computer does have a Recovery Partition, it may need to be enlarged &/or extraneous matter deleted from within it.