Navigate to > Applications and Web Categories .
Kerio Control applies its own rule set to traffic originating from the appliance (e.g., license checks, category updates).
: Categorization relies on Zvelo key tokens that expire every 21 days. If these tokens fail to refresh, you will see an "Invalid Authorization" error in your logs.
By resolving upstream DNS latency and configuring direct routing rules for backend databases, your GFI KerioControl engine will continuously process web profiles without throwing categorization warnings or dropping client sessions.
Check the /opt/kerio/winroute/winroute.cfg file via SSH and ensure the DiaServerUrl value is set to v4.url.zvelo.com . Navigate to > Applications and Web Categories
: Open Logs > Error . You should no longer see "DNS response timeout" linked with "Web Filter categorization disabled".
它的 Web 过滤功能依赖于第三方服务商 Zvelo 提供的庞大 URL 分类数据库。当用户尝试访问网站时，防火墙会查询该数据库来判断此页面属于社交、暴力还是购物等类别，并根据管理员设定的策略决定允许或禁止访问。
When categorization is disabled, Kerio Control cannot assign a category to any requested URL. Consequently:
希望这篇详尽的故障排查指南能帮助您快速解决当前困境，并加强未来的网络防御能力。面对棘手的网络问题时，请记住：大多数系统行为的背后都有其设计的逻辑，它并非难以捉摸的“玄学”，而是可以通过科学的方法进行剖析与解决的工程学问题。 If these tokens fail to refresh, you will
: Ensure the DiaServerUrl in /opt/kerio/winroute/winroute.cfg is set correctly to v4.url.zvelo.com .
Fixing Kerio Control Error: "Web Filter is Not Activated, Categorization is Disabled" for Lifestyle and Entertainment Content
user wants a long article about the error "kerio control web filter is not activated categorization is disabled hot". I need to provide a comprehensive guide covering causes, troubleshooting steps, and how to re-enable categorization.
The error indicates that your firewall cannot classify web pages, which often leads to intermittent internet dropouts or unblocked malicious content . This critical issue typically stems from unreliable DNS queries sent to Kerio update servers, expired Zvelo URL database tokens , or subscription synchronization errors. : Open Logs > Error
: A user attempts to visit an entertainment blog. Kerio queries the cloud lookup system. The cloud tags it as "Lifestyle and Entertainment," and Kerio enforces your custom policy (e.g., drop or deny).
: The Web Filter requires a valid, active license subscription. If it lapses, the module reverts to a trial state and deactivates after 30 days. Step-by-Step Solutions 1. Fix DNS Forwarding for Zvelo Servers
To resolve the problem, it is first necessary to understand what the error messages actually mean:
