If you are using Windows in Virtualbox ontop of Linux based (i.e: Ubuntu) machine, you might have seen this problem that accessing symlinks in windows does not work. Instead of showing contents after resolving Linux symlinks, you will end up with “Protocol error”.
This error can be fixed using vBoxManage by setting a boolean property (SharedFoldersEnableSymlinksCreate) against each folder shared with VirtualBox based machine.
VBoxManage setextradata <VirtualMachineName> VBoxInternal2/SharedFoldersEnableSymlinksCreate/<SharedFolderName> 1
After executing above command, verify your change with following:
VBoxManage getextradata <VirtualMachineName> enumerate