: If the online activation fails due to network issues, download the license file from the Kerio Product Registration page and use the Register Offline option in the Kerio Activation Wizard.
Kerio Control is designed to disable the Web Filter if it fails 10 consecutive DNS checks to reach the update servers within one minute. You can force it to ignore these failures and keep the filter active by using the SSH console.
If the filter is activated but still blocking legitimate sites, you can bypass the categorization engine for specific URLs. Using Kerio Control Web Filter : If the online activation fails due to
: In the GFI Accounts Portal , verify your license is not expired.
The Web Filter uses an external service (Zvelo) which requires a valid authorization token. These tokens expire every . If your DNS settings prevent the token from renewing, categorization will be disabled. If the filter is activated but still blocking
If you are encountering the error your firewall has likely triggered a safety mechanism that pauses web filtering when it cannot reliably reach the categorization servers.
The Web Filter requires a specific active license; without it, the module behaves as a trial and will automatically disable after 30 days. These tokens expire every
: Hold the Shift key while navigating to Status > System Health in the admin interface, then click Enable SSH .
This issue is typically caused by , expired authentication tokens , or network reliability checks failing multiple times in a row. Use the following guide to troubleshoot and implement workarounds. 1. Immediate Workaround: Disable Reliability Detection