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@dvd123 have you tried refreshing it in the veyon master? maybe the units that got blank have its sleep mode enabled.
@zsv08 ok, thanks.
Gonnna check the installation. I might forget something.
Ensure that no changes have been made to this file since it was used to deploy AutoDeploy.
Be sure to take a backup of the VM content if you are terminating the VM in order to upgrade with a new ISO.
If AutoDeploy was deployed with HA support, this process terminates both VMs.