Verify the expiration date. If it has expired, you must renew the license through your Kerio reseller to reactivate categorization.
Outbound traffic from the Kerio host itself to the licensing servers is being blocked by upstream ISP routers or misconfigured traffic rules.
| Component to Check | Action | Expected Result | | :--- | :--- | :--- | | | Navigate to Logs > Warning Log | No new "Invalid authorization" or "categorization disabled" errors. | | Test URL Categorization | Under Content Filter > Applications and Web Categories , use the "Test URL" tool with a common site like google.com . | The tool returns a category (e.g., "Search Engines / Portals") without an error. | | Manual URL Check | Go to Content Filter > Applications and Web Categories and click the Add button. Enter a test URL (e.g., youtube.com ). Ensure the "Detected Content" column shows a category. | The category is displayed, confirming the filter is working. | | User Experience | Ask a non-admin user to browse to a known blocked category. | The site is blocked, and a block page is shown, confirming policy enforcement. |
There are several reasons why the Kerio Control web filter may not be activated, and categorization is disabled. Some of the common causes include:
If you have SSH access enabled, you can restart the specific web filter service via the command line, though a full system reboot through the web GUI is safer and highly recommended. Verifying the Fix
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If the filter remains disabled due to network instability, you can manually disable the "Reliability" check.
and verify that "Enable Kerio Control Web Filter" is checked. Free Disk Space:
This report outlines the causes and solutions for the error where . This issue typically stems from connectivity failures, authorization timeouts, or expired security tokens used by the Zvelo categorization engine. 1. Root Causes
: The default ISP DNS servers might be throttling requests from the filter, which makes frequent calls to services like for page ratings. License Hiccups
Verify the expiration date. If it has expired, you must renew the license through your Kerio reseller to reactivate categorization.
Outbound traffic from the Kerio host itself to the licensing servers is being blocked by upstream ISP routers or misconfigured traffic rules.
| Component to Check | Action | Expected Result | | :--- | :--- | :--- | | | Navigate to Logs > Warning Log | No new "Invalid authorization" or "categorization disabled" errors. | | Test URL Categorization | Under Content Filter > Applications and Web Categories , use the "Test URL" tool with a common site like google.com . | The tool returns a category (e.g., "Search Engines / Portals") without an error. | | Manual URL Check | Go to Content Filter > Applications and Web Categories and click the Add button. Enter a test URL (e.g., youtube.com ). Ensure the "Detected Content" column shows a category. | The category is displayed, confirming the filter is working. | | User Experience | Ask a non-admin user to browse to a known blocked category. | The site is blocked, and a block page is shown, confirming policy enforcement. | Verify the expiration date
There are several reasons why the Kerio Control web filter may not be activated, and categorization is disabled. Some of the common causes include:
If you have SSH access enabled, you can restart the specific web filter service via the command line, though a full system reboot through the web GUI is safer and highly recommended. Verifying the Fix | Component to Check | Action | Expected
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
If the filter remains disabled due to network instability, you can manually disable the "Reliability" check. | | Manual URL Check | Go to
and verify that "Enable Kerio Control Web Filter" is checked. Free Disk Space:
This report outlines the causes and solutions for the error where . This issue typically stems from connectivity failures, authorization timeouts, or expired security tokens used by the Zvelo categorization engine. 1. Root Causes
: The default ISP DNS servers might be throttling requests from the filter, which makes frequent calls to services like for page ratings. License Hiccups