During the installation of open-vm-tools 1.3.0, libxmlsec1-openssl1 is also
required to be installed.  Doing a zypper in on open-vm-tools triggers the
install of libxmlsec1-openssl1.  Vrsion 1.2.26 gets installed. 
libxmlsec1-openssl1 depends on libxemsec1-1.  libxmsec1-1 was already installed
and remained at version 1.2.25.  After open-vm-tools was installed, trying to
start the open-vm-tools vgauthd service service failed due to version
incompatibilities between libxmlsec1-openss1 and libxmlsec1-1.

Subsequently, updating libxmlsec1-1 to the available version1.2.26 allowed the
vgauthd service to start.