When upgrading ESXi from version 8.0u1 to 8.0p02, one of the host may fail to Enter into maintenance mode while undergoing remediation. Subsequently the High Availability (HA) on this specific host maybe in unconfigured state.
HA is in an unconfigured state due to an internal bug. This will be fixed in the future release.
Currently there is no resolution to the issue. This will be resolved in the future release.
To workaround the issue , please follow the below mentioned steps: