I can't take much more of this.
My original issue was writing directly to my NAS (https://forum.macrium.com/57855/Invalid-The-user-name-or-password-is-incorrect)
Even after jumping into a remote session with Macrium Support, we were unable to resolve the issue - it seemed like we fixed it by creating a separate user on the NAS but then the issue came back the next day.
I gave up on trying to make that work and started writing backups to my one of my local drives.
Then I started receiving the error 'Backup aborted! - Failed To Create Volume Snapshot. Failed - 0x80042316 - IDispatch error #8470'
Everything I've read points to the backup conflicting with some other software or Windows updates using VSS.
Windows updates are not pending and I do not use any other disk imaging software, so I don't know what else could be using VSS.
I've ran the vssadmin list writers command and it all looks standard according to posts on the matter.
The failures seem random, sometimes I can go a few days without issue but eventually the error will return.
I've tried looking through logs for any additional information but I'm not seeing anything.
If I can't get this figured out I will have to insist on a refund. As stated in my previous post, everything was working fine while I was using the free version. The issues only started happening once I upgraded to the paid edition. That's it. No system changes anywhere. Why this is the case, I have no idea.