| Issue | Likely Fix |
|-------|-------------|
| “Invalid license file” | Check that the file matches the exact System ID and software version. |
| License uploaded but still shows trial | Clear browser cache and refresh the license status page. |
| Cannot find offline generation option in portal | Your account may require support intervention – contact GFI Support. |
| File upload fails | Ensure the file name has no spaces or special characters; rename to license.lic if needed. |
A Kerio Control Offline License File is a cryptographically signed text file (usually saved with a .lic or .txt extension) that contains your license entitlement data. Unlike standard online activation where the server communicates directly with the firewall, the offline method requires a manual, two-step human workflow. Kerio Control Offline License File
On a standard internet-connected PC:
Using a separate internet-connected workstation (or via a secure file transfer), the administrator logs into the vendor’s licensing portal. The portal provides an option to "Activate via License File" or "Offline Activation." The administrator inputs the Hardware ID and the purchased License Key. | Issue | Likely Fix | |-------|-------------| |