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On Firepower Threat Defense High-Availability (HA) setup, the secondary device in the HA pair may go into disabled state due to an app-sync failure after upgrading to version 6.4.0.9.
Upgrading a Firepower Threat Defense High Availability pair to version 6.4.0.9.
(1)Trigger a new Deployment to the HA-pair using FMC-GUI -This deployment will be done only on active node(as other node is in failed state) -Once the deployment succeeds, goto next step (2)On the failed node suspend HA using "configure high-availability suspend" > configure high-availability suspend Please ensure that no deployment operation is in progress before suspending high-availability. Please enter 'YES' to continue if there is no deployment operation in progress and 'NO' if you wish to abort: YES Successfully suspended high-availability. (3)On the same node, resume HA using "configure high-availability resume" > configure high-availability resume Successfully resumed high-availablity. (4)HA should be re-established now. > show failover | include host This host: Primary - Standby Ready Other host: Secondary - Active
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