Kerio Control Web Filter Is Not Activated Categorization Is Disabled Fixed __link__ May 2026
Here’s a useful, concise fix for the issue: Kerio Control web filter not activating with “categorization is disabled.”
Then re-download categories.
"Kerio Control Web Filter is not activated. Categorization is disabled." Here’s a useful, concise fix for the issue:
Step 4: Rebuild Database
If you suspect a corrupted database, rebuild it to resolve categorization issues.
4. Restart Web Filter Service
- In the admin interface: Status → Services.
- Restart the Web Filter service.
- Alternatively, restart the whole Kerio Control service during a maintenance window.
If a traffic rule prevents the appliance from reaching the update servers, it cannot validate the Web Filter license. In the admin interface: Status → Services
| FQDN | Port | Purpose |
|------|------|---------|
| licensing.gfi.com | 443 | License validation |
| brightcloud.kerio.com | 443 | URL categorization updates |
| ocsp.digicert.com | 80/443 | Certificate revocation (HTTPS inspection) |
Don’t let a disabled web filter leave your network exposed. Use this guide to diagnose, repair, and prevent the problem from returning. If a traffic rule prevents the appliance from
This error often occurs because the Zvelo key token, which expires every 21 days, has failed to renew. Check DNS Forwarders: