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• Enabling Application Awareness

  Overview Application awareness is available under the Kerio Control Web Filter License. Having it enabled means that the behavior of content filtering and bandwidth management in Kerio Control changes...

• Unable to Block YouTube Through Kerio Control

  Overview Kerio Control does not block YouTube when users access the site using Google Chrome. This article explains why this issue occurs and how you can work around it.  Note: The QUIC functionality ...

• Web Filter categorization disabled. Serial number: ko-197974

  Overview Periodically, users connected to Kerio Control may lose Internet connectivity. Kerio Control is generating such entry in Error logs: DNS response timeout, Kerio Control Web Filter categorizat...

• Legit website is being blocked by Web Filter

  Overview From time to time, Kerio Control might categorize the website incorrectly, causing the services of that particular website to be blocked. The legit website is being reported as blacklisted an...

• Allowing Whatsapp content

  Overview When using the Whatsapp messenger, the traffic might be dropped for no apparent reason. It may cause various issues with sent/received messages and downloading attachments both on mobile phon...

• Allowing only Outlook content for specific IP address groups

  Overview While restricting access to the Internet for all computers, Outlook needs to be the only app allowed. PCs connected to Kerio Control should not be able to browse the Internet. This article pr...

• Allowing Internet browsing only for certain websites

  Overview While trying to block Internet access entirely with only one exceptional website access, you need to configure Content rules in a specific manner. Kerio Control will need to have the Always r...

• Blocking Microsoft Store access

  Overview While trying to block access to the Microsoft Store, the proper Content Filter rule needs to be configured. The rule will prevent users from being able to download and install any Microsoft S...

• Youtube is restricted by Safe Search

  Overview While trying to open certain Youtube videos, especially Live streams, Kerio Control blocks the connection. The following error message appears on Youtube: Video unavailable. This video is res...

• Website blocked with ERR_HTTP2_PROTOCOL_ERROR

  Overview While trying to open a specific website, the site cannot be reached with ERR_HTTP2_PROTOCOL_ERROR shown in the Chrome browser. The site couldn't be loaded despite having a valid SSL certifica...