Kerio Control Web Filter Is Not Activated Categorization Is Disabled Fixed May 2026

Here’s a detailed troubleshooting and resolution guide for the issue where Kerio Control’s web filter is not activated and categorization is disabled.

Step 5 – SSL Inspection (HTTPS Categorization)

For HTTPS sites, Kerio Control must intercept and inspect SSL to categorize URLs. Without SSL inspection, only SNI-based partial categorization works. Here’s a detailed troubleshooting and resolution guide for

Step 1 – Verify Licensing

Kerio Control’s web filter requires a Content Filtering license (part of the Security Pack). Step 5 – SSL Inspection (HTTPS Categorization) For

Fix 5: Repair Time Synchronization (NTP)

Categories rely on HTTPS certificates and time-based tokens. If your system clock is off by more than a few minutes, the categorization service will disable itself to avoid security mismatches. If incorrect:

Check system time via SSH:

date

If incorrect:

  1. Go to Configuration → Advanced → Time Settings
  2. Enable Use NTP server (e.g., pool.ntp.org)
  3. Apply and force a sync: ntpdate -u pool.ntp.org
  4. Restart categorization service again.