UnityVSA Community Edition - User rights on standalone NAS server

Hello all,

I have a UnityVSA Community Edition running on VM workstation with windows 11. I want to use it as NAS server.
I do not have an AD, So I configured the NAS server as standalone system in a workgroup.
When I connect to the NAS server using Windows File Explorer, I get a Windows Security Dialog asking for network Credentials. I have tried NAS1\user1 and 192.168.1.81\user1 and the password. neither gives me access to the share. permission denied.
I want to give the local user (user1) access rights to the file share on the UnityVSA. user1 is a local account on the UnityVSA as an administrator role.
My Problem is that I can't manage local users on it. I have tried computer management (mmc) even with with the EMC Unity-VNX-File-CIFS-Management-Tools 8.1.9.157. I can connect to the NAS server, but It tells me I do not have permissions to see the list of shares of the NAS server. I have Tried Windows 11, 10, 7 and XP with no results.
Can anyone give advice on how to set up local users on UnityVSA for giving them file access rights and connect from File Explorer on a windows 11 client?

Host Environment

UnityVSA Ver. 5.4.1
--------------------------
O/S = Windows 11 Pro 23H2 (x64)
VMware® Workstation 17 Pro
17.6.2 build-24409262
128GB Memory
Apps installed
    - Unity_VNXFileCifsMgmt 8.1.9
    - UnisphereCLI 5.2.1
    - UnityConnectionUtility 5.3.0
No AD - just WORKGROUP

-------------------------
UnityVSA VM Machine
Memory: 12GB
Processors: 2 and Eth 1-6
Harddisk1 22GB (system)
Harddisk2 30GB (system)
Harddisk3 32GB (system)
Harddisk4 50GB (Pool1)
SP = SPA (single)
Mgmt IP = 192.168.1.80
Local Unity Account (Administrator Role)
account = user1
pass    = Password123#

NAS Server
---------------------
Name = NAS1
IP = 192.168.1.81
SN  = 255.255.255.0
GW = 192.168.1.1
DNS = No
Antivirus = No
SMB Server = Yes
NFS Server = No
Multiprotocol = No 
Pool = Pool1 
Replication = No

File System
---------------------
Name FS1
Size = 10GB
NAS Server = NAS1
Pool = Pool1 
Protocol = Windows Shares (SMB)
Replication = No 
Thin Yes
Tiering = High

SMB Share
---------------------
Share Name  = SHARE1
NAS Server  = NAS1
File System = FS1
Local Path  = /FS1/
Export Path = \\NAS1\SHARE1
                       \\192.168.1.81\SHARE1