Upon the official expiration date, the key does not immediately kill the protection. Typically, Kaspersky allows a 14 to 30-day grace period where definitions continue to update, but the admin is locked out of configuration changes until a new key is applied.

If your computers are in an air-gapped network segment without internet access, you have two options:

Kaspersky offers several ways to license its endpoint security, depending on your organization’s needs: