Few weeks after the announcement and release of vSphere 6.7, VMware has also released vSphere 6.5 U2 however you cannot upgrade from to vSphere 6.7 from 6.5U2. It's not supported. Part of the release ...
However, users running on vCenter server 5.5 U3b with an external vCenter Single Sign-On to vCenter Server 6.5 Update 1 with an external Platform Services Controller are unsupported. Check the release ...