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Contact Us NowKerio Control applies its own rule set to traffic originating from the appliance (e.g., license checks, category updates).
Navigate to Configuration → Network Rules → Traffic Rules.
Add a rule at the top:
Firewall local hostAnyHTTPS (and optionally HTTP, DNS)AllowPlace this rule above any "Deny all" rules.
The error “Kerio Control Web Filter is not activated. Categorization is disabled.” typically indicates a licensing, connectivity, or service state issue. Following the diagnostic and resolution steps above will restore category-based web filtering. If unresolved, contact GFI/Kerio support with debug logs and license file details.
If the issue persists, check for any hotfixes or updates for Kerio Control. GFI (the company behind Kerio) periodically releases updates and hotfixes that can resolve known issues.
Older Kerio Control versions hardcoded old IP ranges for the categorization servers. If those blocks were sold or changed, your firewall tries to reach dead IPs. This manifests as a "stuck hot" error where the service cycles between activating and failing.
If the service is stuck in a frantic "hot" retry loop, force a reset:
/var/kerio/winroute/extensions/urldb/ or C:\Program Files\Kerio\WinRoute\extensions\urldb\).cache folder.This issue typically occurs due to one of the following:
licensing.kerio.com or categorization.kerio.com.Subscribe to our Newsletter to receive eSurvey updates on product campaigns, case studies, press releases, upcoming events and more.
Kerio Control applies its own rule set to traffic originating from the appliance (e.g., license checks, category updates).
Navigate to Configuration → Network Rules → Traffic Rules.
Add a rule at the top:
Firewall local hostAnyHTTPS (and optionally HTTP, DNS)AllowPlace this rule above any "Deny all" rules.
The error “Kerio Control Web Filter is not activated. Categorization is disabled.” typically indicates a licensing, connectivity, or service state issue. Following the diagnostic and resolution steps above will restore category-based web filtering. If unresolved, contact GFI/Kerio support with debug logs and license file details. Troubleshooting Guide: "Kerio Control Web Filter is not
If the issue persists, check for any hotfixes or updates for Kerio Control. GFI (the company behind Kerio) periodically releases updates and hotfixes that can resolve known issues.
Older Kerio Control versions hardcoded old IP ranges for the categorization servers. If those blocks were sold or changed, your firewall tries to reach dead IPs. This manifests as a "stuck hot" error where the service cycles between activating and failing. Source: Firewall local host Destination: Any Service: HTTPS
If the service is stuck in a frantic "hot" retry loop, force a reset:
/var/kerio/winroute/extensions/urldb/ or C:\Program Files\Kerio\WinRoute\extensions\urldb\).cache folder.This issue typically occurs due to one of the following: Place this rule above any "Deny all" rules
licensing.kerio.com or categorization.kerio.com.Copyright Copyright © 2026 Morgan's Cascade
esurvey-gnss All rights reserved.Terms of Use / Privacy Policy
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