Check your email for a .zip file containing your new .key file.
Never wait for the red "License expired" popup to appear on a CEO’s laptop. Act proactively, stay updated, and keep your infrastructure secure.
Deploying a license key to client devices - Kaspersky Support
: With a single check of the box, "Automatically deploy key to managed computers," the new license ripples across the network like a digital wave, silencing alarms and restoring the green "Protected" status to hundreds of screens. The Aftermath kaspersky endpoint security key file new
Navigate to the official Kaspersky Key File Generation page .
: When upgrading to a more comprehensive version of Kaspersky Endpoint Security or expanding the protection to additional endpoints, a new key file reflecting the updated license terms is necessary.
First, navigate to the folder where the Kaspersky executable is located (e.g., C:\Program Files (x86)\Kaspersky Lab\Kaspersky Endpoint Security for Windows\ ). Then run: Check your email for a
| Error Message | Probable Cause | Solution | | :--- | :--- | :--- | | "Invalid key file" | The file is corrupted or not a valid KES key (e.g., it’s for Kaspersky Internet Security). | Re-download the key from your Kaspersky account. Ensure the file extension is .key . | | "License has expired" | You accidentally used an old, expired key instead of the new one. | Double-check the file name. The new key typically has a later date in its metadata. | | "The key file does not match the application version" | You are trying to use a KES 11 key on KES 12, or vice versa. | Contact support for a version-compatible upgrade key. | | "Exceeded the maximum number of devices" | Your new key covers 25 devices, but you are applying it to 30. | Uninstall KES from unmanaged devices or purchase additional licenses. | | "Unable to connect to activation server" | The endpoint lacks internet or proxy settings are wrong. | Configure the proxy in KES settings or use offline activation via the command line. |
If you have a standalone machine (not managed by KSC), you can apply the key directly: Open the Kaspersky Endpoint Security interface.
, which will automatically activate only when the current license expires. 3. Adding Key File Locally (Standalone) For individual devices not managed by a server, use the KES Web Interface or local application window. Open Licensing Section right arrow right arrow link at the bottom of the main window). Add License Add license key Activate the application Upload File from the dropdown, click , select your file, and click Key Considerations Deploying a license key to client devices -
If your target network is or has internet access.
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