This article explains why this message appears, the seven most common causes, and step-by-step solutions to restore full web filtering functionality. To understand the error, you must first know how Kerio Control’s web filter works.
Kerio Control does not rely solely on static blocklists. Instead, it uses . When a user requests a website, the Kerio appliance queries a remote categorization server (provided by Kerio’s parent company, GFI Software, or a third-party partner like McAfee). The server returns a category ID (e.g., 92 for “Gambling”). The appliance then applies your content rules. This article explains why this message appears, the
If categorization is disabled , the appliance cannot query the cloud. Consequently, no website receives a category, and all content rules dependent on categories fail silently. the seven most common causes