So this is cumbersome for VMware. The virtualization giant has made an update to its flagship vSphere suite because the issues for which it was released were not fixed and possibly made worse.
The upgrade was vSphere 7 Update 3b, which was the subject of a November 15th VMware blog post titled “Important Update.” It provided a solution to problems that could cause vSphere to crash or prevent some upgrades from successfully completing. This post has been removed – but The registry found it again [PDF] from Google’s cache.
vSphere 7 Update 3b has also disappeared. The VMware Knowledge Base page states that it was pulled “due to additional post-upgrade HA configuration complications.”
The release should address a known issue that prevented vSphere from entering high availability mode after upgrading to vSphere 7 Update 3.