You will now be licensed to accommodate 250 anyconnect connectionns. Apply the license to the ASA using the activation-key command. To enable An圜onnect essentials: Purchase the license (L-ASA-AC-E-55xx= it costs $100-$500). How do I activate my ASA An圜onnect Plus license? Enter the license key in ASA and upgrade software license, in this case, we upgrade sec plus.Login to Cisco registration portal – and enter PAK key and ASA serial number, then you will get the license key by registered email immediately.A user in another forum reported that they were able to accomplish this successfully. If you do not have such a key on-hand, you will need to contact the Cisco License Team. Thus, if you wish to revert, you must overwrite the current permanent key with another permanent key with fewer features. If you enter a new permanent key, it overwrites the already installed one. You can install one permanent key, and multiple time-based keys. If you enter a key for the first time, and specify deactivate, then the key is installed on the ASA in an inactive state. To deactivate any active time-based key, enter the deactivate keyword.

The last time-based key that you activate for a given feature is the active one. If you do not enter any value, activate is the default.

The activate and deactivate keywords are available for time-based keys only. The permanent key must be replaced with another permanent key with fewer features. You can only deactivate Time-Based Keys as per the Cisco Documentation.

Cisco asa activation key command