Verify that the time, date, and time zone settings on the endpoint or KSC server are completely accurate. Incorrect system clocks will cause the activation handshake to fail.
Select one of the two options based on what you received from your vendor: kaspersky endpoint security 11 license key install
High-level options
Double-check for typos. Commonly confused characters include 0 (zero) and O (letter), or 1 and I . Verify that the time, date, and time zone
Click Browse , navigate to the directory containing your valid .key file, select it, and click Open . Verify that the time
To install or activate a license key for Kaspersky Endpoint Security (KES) 11
Select either or Add key file , load your credentials, and click Next .