Hi,
Remove the user account with VMware_conv_SA name in the Local Users and Groups container from the Computer Management snap-in. To open Computer Management snap-in, right-click Computer icon. Click Manage. On the opened snap-in, go to Local Users and Groups>Users. On the right pane, right-click the target user i.e. VMware_conv_SA, and click Delete.
Now right-click any folder that you want to share and you will notice that the user account has been removed.
This would surely work.