Hello,
after the upgrade to vSphere 6.7 u3 VMware Update Manager has been stop work.
The plugin is not loaded an under Administration - Solutions - Client plug-ins I've deployment Incompatible for the related plugin "VMware vSphere Update Manager Web Client plug-in ver 6.7.0.41905".
I've already tried to uninstall and reinstall again, force unregister of plugin but the issue is always the same.
Thanks for your support!