FortiManager detects FortiGate HA clusters operating in MVC mode, provides a warning, and prevents cluster firmware upgrade 7.4.4
FortiManager detects FortiGate HA clusters operating in multi-version cluster (MVC) mode, provides a warning, and prevents the cluster firmware from being upgraded.
For more information about this feature, see: FortiManager detects FortiGate HA clusters operating in MVC mode, provides a warning, and prevents cluster firmware upgrade.