Kaspersky Endpoint Security Key File New !new! Online

For 2026, maintaining valid licensing is crucial against new threats. Always keep your .key file safe.

Open your web browser and navigate to the (or access it via the Kaspersky CompanyAccount portal). Enter your valid 20-character activation code . Provide your registered corporate email address. Complete the security CAPTCHA and click Next or Submit .

: If you are renewing, you can enter the new key as a reserve key so it automatically takes over when the current one expires.

If the GUI fails, use the kesl-cli command (Linux) or avp.com (Windows): kaspersky endpoint security key file new

The portal will generate a .zip file containing your new .key file and a text document with license details. Extract this file to a secure administrative directory.

Select Activate using a key file and point to your .key path.

Kaspersky uses two primary methods for licensing: activation codes and key files. For 2026, maintaining valid licensing is crucial against

| 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. |

Which and KSC are you running?

Open the local interface on the machine. Enter your valid 20-character activation code

Are your endpoints , or are they in an isolated network ?

You can check the expiration and validity of your current key in the License details section of the app. Removing Old Keys: