Since Ubuntu runs in a virtual machine, when you mount a Windows shared folder through Ubuntu, some CAE software will report a calculation error when running it in the mount point. Consider sharing the Ubuntu folder with Windows, so you need to build a Samba server on the Ubuntu system.

First, install the samba package on Ubuntu:

sudo apt install samba -y

Create a shared folder:

mkdir ${HOME}/LinuxShare

Edit the Samba configuration file /etc/samba/smb.conf:

sudo vim /etc/samba/smb.conf

Add the following content to the end of the file, save and exit:

[Ubuntu_Share] # The name of the shared folder displayed on the client
    comment = Samba # Comment, displayed to the user
    path = /home/***/LinuxShare # The local path of the shared folder, fill in the absolute path
    public = yes # Whether anonymous users are allowed to access
    writable = yes # Whether users are allowed to edit
    available = yes # Whether it is available
    browseable = yes # Whether it can be browsed on the network
    valid users = user # Fill in the Ubuntu login user name

Set a password for the Samba user:

sudo smbpasswd -a user

Start the Samba service daemon:

sudo systemctl enable smbd
sudo systemctl start smbd

Query the Samba service status:

sudo systemctl status smbd

Update the Samba configuration file /etc/samba/smb.conf and refresh it with the following command:

sudo service smbd restart 

Add firewall rules:

sudo ufw allow samba

After the configuration is complete, you can access the shared folder on the Windows side. For more information, please refer to other documents.