Stop the virtual machine either power down or suspend.
Quit Fusion.
Edit the VMX file for the Windows virtual machine you are using and either edit the following existing setting for the file or add a new line - but check first before adding:
tools.hgfs.volumeInfoType = "max"
Save and close the VMX file.
Restart Fusion and restart the Windows virtual machine.
This will cause volume space information to look for the largest disk space across all shares and return that for the volume query for "\\vmware-host\Shared Folders" virtual folder.
This will allow your failing file copy to not get the out of disk space, unless your file is truly larger than any drive on all the shares.