No here a recap again on my yesterday and again today accomplished findings:
Access to an OMV4 server using SSH terminal prompt and FTP shared folder is working fine with all Windows7, macOS, and Windows 10 operating systems.
Access to the same OMV4 server using CMB/CIFS shared folder is working fine with all Windows7 and macOS operating systems, however does not work with the Windows 10 operating system despite having followed all guidelines outlined with the HOW-TO "Connect to OMV SMB shares with Windows 10" post.
Accessing an other commercial NAS platform with the Windows7, macOS, and Windows 10 operating systems is working fine. No issues at all, it works with a Windows 10 PC.
Now, to me it seems to look like a problem with OMV4's setup for CMB/CIFS sharing mechanism when using Windows 10.
With the same Windows 10 PC, I can access a CMB/CIFS shared drive of the same commercial NAS platform without any problems, however it does not work with a shared drive declared within OMV4.
Is there anything else I can check within OMV4 so that I can further nail down the origin of the problem?