For administrators managing secure or isolated networks, the Kerio Control Offline License File is a critical tool for activating firewall services without exposing the appliance to the open internet. This manual process involves generating a specific license.key file from the official GFI/Kerio registration portal and importing it directly into the administration interface. When to Use Offline Activation
Isolated Environments: Best for systems with restricted or no internet access for security reasons.
New Hardware Deployment: Useful when setting up a new Kerio Control Box that isn't yet configured for WAN access.
License Transfers: Essential for moving a license between different virtual or physical appliances. Step-by-Step: Obtaining and Applying the File Generate the License File:
Visit the Kerio Product Registration page from a device with internet access.
Enter your Server license number and complete the registration wizard.
Once finished, click Download the License to save the license.key file to your local computer. Import to Kerio Control: Log in to your Kerio Control administration interface.
Navigate to the Dashboard and select the Configuration Assistant.
Click Register product (or "Update license info" if already partially set up).
Select the link for Register offline by license file at the bottom right.
Browse for your downloaded license.key file and follow the remaining prompts to finish. Troubleshooting Common Issues Registering new Kerio Control Box Kerio Control Offline License File
If your Kerio Control sits behind a corporate proxy that requires NTLM authentication, the appliance might not be able to reach update servers. While you can configure a proxy in Kerio, some legacy versions struggle. The offline file solves the chicken-and-egg problem.
If obtaining an offline license proves difficult, consider these workarounds:
When using an offline license, some diagnostic and support tools that rely on online health checks may be unavailable. Always keep a backup of your current license file.
The Kerio Control Offline License File is a practical, no-nonsense feature that addresses a real-world gap for administrators who can’t — or won’t — rely on online activation. It’s not flashy, but it’s exactly the sort of dependable tool that network teams quietly appreciate: simple to use, security-conscious, and effective at keeping defenses up when connectivity won’t cooperate.
Registering Kerio Control Offline with a License File If your Kerio Control instance is unable to connect to the internet, you can still activate the product by manually downloading and importing a license key file (
). This process ensures your firewall remains fully functional and receives necessary updates without requiring a direct external connection for registration. 1. Download the License Key File
To obtain the necessary file, you must use a device that has internet access: Visit the official Kerio Product Registration page.
Enter your purchased license number and the security captcha code.
Review your company information and select your operating system and language. For hardware appliances, you may also need to enter the hardware serial number.
Complete the wizard and click Download the License to save the file to your computer. 2. Import the File into Kerio Control For administrators managing secure or isolated networks, the
Once you have the file, follow these steps within the Kerio Control administration interface: Log in to the Kerio Control Administration interface.
On the Dashboard, locate and click the Configuration Assistant button in the bottom right corner.
In the window that appears, select Register product or Update license info.
Click the link for Register offline by license file (usually located in the bottom right of the registration window). Click Browse, select the file you downloaded earlier, and click Next.
Follow any remaining prompts in the wizard to complete the activation. Troubleshooting and Tips
Registration Card: If you have a physical copy, use the serial number provided on the registration card supplied with the product.
Hardware Issues: If a hardware box does not accept your key, verify the license details or contact GFI Customer Care for a manual update.
Trial Mode: If you do not have a license yet, you can select Activate in unregistered mode during the initial setup to use the 30-day trial.
To activate Kerio Control using an offline license file, you must first obtain the file from the registration portal and then import it through the administration interface. This method is necessary for systems without an active internet connection. Step 1: Obtain the License File
Before starting the activation in Kerio Control, you need the physical .key file: Navigate to the Kerio Product Registration page. Register your product using your purchased license number. Download the license.key file to your local computer. Step 2: Import the License File Temporary internet connection – Connect Kerio Control to
You can import the file during the initial setup wizard or from the main dashboard. From the Dashboard:
Open the Kerio Control administration interface in your browser (default IP is typically 10.10.10.1).
On the Dashboard, locate and click the Configuration Assistant button in the bottom right corner.
Click Register product (or Update license info if updating an existing instance).
In the registration window, select the link for Register offline by license file.
Click Browse, select your downloaded license.key file, and click Next.
Complete the remaining steps of the registration wizard as prompted. Important Considerations Registering Kerio Control - KerioControl - GFI
Once installed, navigate to the Dashboard. The red "Unlicensed" warning banner should disappear. The "Expiration date" should reflect your purchase period.
Even with a manual file, things can go wrong. Here are the most frequent issues and fixes.