Kerio Control Web Filter Is Not Activated Categorization Is Disabled Fixed ⟶

Before diving into technical commands, ensure the software is correctly registered and the license is current.

┌────────────────────────────────────────────────────────┐ │ Kerio Control DNS Panel │ ├────────────────────────────────────────────────────────┤ │ [X] Enable custom DNS forwarding │ │ │ │ DNS Name ──► *.zvelo.com │ │ DNS Server(s) ──► 1.1.1.1, 208.67.222.222 │ └────────────────────────────────────────────────────────┘ Navigate to the section under the configuration menu.

How to Fix "Kerio Control Web Filter is Not Activated, Categorization is Disabled"

Check the expiration date specifically for the .

If the Web Filter disables itself because of DNS timeouts, you can force it to stay active by disabling the reliability check. Log in to the Kerio Control console via SSH . Navigate to the winroute directory: cd /opt/kerio/winroute Before diving into technical commands, ensure the software

"Invalid Authorization" errors often stem from expired Zvelo key tokens. It is recommended to use reliable DNS servers like Cloudflare (1.1.1.1) (208.67.222.222)

Often, the license simply needs to be re-verified with the Kerio/GFI servers to kickstart the backend categorization service. Log into the interface.

: The default ISP DNS servers might be throttling requests from the filter, which makes frequent calls to services like for page ratings. License Hiccups

If you are seeing the error in your Kerio Control administration interface, your network's content filtering has essentially been paralyzed. This error prevents the firewall from identifying website categories (like social media, gambling, or malware sites), meaning your custom URL rules won’t work. If the Web Filter disables itself because of

Navigate to the configuration panel in the web administration interface.

Kerio Control is a popular network security and firewall solution that provides robust protection for organizations. One of its key features is the Web Filter, which allows administrators to control and monitor internet access for users within the network. However, sometimes the Web Filter may not activate properly, or categorization may be disabled, leading to reduced functionality. In this write-up, we will explore the possible causes of these issues and provide a step-by-step guide on how to resolve them.

Sometimes the service just needs a kick.

Once the underlying connection or license issue is resolved, you must re-enable the filter: It is recommended to use reliable DNS servers

The error is almost always resolvable without reinstalling the entire firewall. In most cases, the root cause is either a simple licensing expiration, a DNS failure, or a corrupted local database.

A disabled Kerio Control Web Filter can lead to significant network security risks. In most scenarios, the "not activated" error is caused by DNS resolution failures or transient connectivity issues with the Zvelo classification database. By verifying your license, updating your DNS servers, and potentially disabling the DetectReliability feature, you can restore full web filtering functionality.

This error typically occurs when Kerio Control determines the Web Filter is "unreliable," usually because it failed to reach its categorization servers (Zvelo) multiple times.

The issue where the Kerio Control Web Filter shows as "not activated" and categorization is "disabled"