You will typically see the message "This key has reached the maximum usage" when you are trying to activate a new instance of MetaDefender Core v3. This means that you have already used all of your purchased activations.
Typically there is no need to reactivate a license on a machine that already has or had MetaDefender Core v3 installed (e.g., you do not need to reactivate if you uninstalled and are now re-installing the application).
If you want to install MetaDefender Core v3 on additional machines and no longer have any unused activations, you need to contact OPSWAT Sales (firstname.lastname@example.org) about purchasing more activations
If you are looking to transfer an activation from one machine to another machine (e.g., you are retiring the machine that initially hosted your MetaDefender Core v3 and now want a new machine to host it), you need to log a ticket with OPSWAT Support using the "License Transfer Request" topic.
This article pertains to MetaDefender Core v3
This article was last updated on 2019-11-08