Resolving Web Filter Invalid authorization failures - KerioControl
The most basic, yet frequently overlooked, cause for a disabled web filter is licensing. The Kerio Control Web Filter requires a specialized premium subscription module.
Once the underlying network communication pathways are restored, verify your active filtering configuration.
./tinydbclient "update SiteFilter set DetectReliability=0" /etc/boxinit Use code with caution. The 'URL Filtering' rule will be skipped
Alternatively, you might see a variation: "HTTP Policy: Web filter is not available. Categorization is disabled. The 'URL Filtering' rule will be skipped."
This error is a critical red flag. It means your content filtering engine is offline. For businesses relying on Kerio Control for productivity, compliance, and security, disabled categorization turns your expensive UTM appliance into a basic NAT router.
If you want to force the web filter to stay active despite poor network reliability, you can disable the reliability detection in the SSH console. yet frequently overlooked
If the "hot" warning still glares at you from the dashboard, remember: The service wants to work. It is "hot" because it is trying desperately to reconnect. Your job is to remove the roadblock—be it a $50 expired subscription or a wrong DNS entry. Do not ignore this message; an offline web filter is an open door for productivity loss and cyber threats.
Go to → Network → DNS .
Resolving Web Filter Invalid authorization failures - KerioControl verify your active filtering configuration.
: Kerio relies on Zvelo for URL categorization. The internal security authorization tokens expire every 21 days. A failure to refresh this token triggers validation errors.
“Kerio Control Web Filter is not activated. Categorization is disabled.”
If you are a network administrator managing a Kerio Control firewall (formerly WinRoute), you may have encountered a frustrating red banner or log entry stating:
Resolving Web Filter Invalid authorization failures - KerioControl
The most basic, yet frequently overlooked, cause for a disabled web filter is licensing. The Kerio Control Web Filter requires a specialized premium subscription module.
Once the underlying network communication pathways are restored, verify your active filtering configuration.
./tinydbclient "update SiteFilter set DetectReliability=0" /etc/boxinit Use code with caution.
Alternatively, you might see a variation: "HTTP Policy: Web filter is not available. Categorization is disabled. The 'URL Filtering' rule will be skipped."
This error is a critical red flag. It means your content filtering engine is offline. For businesses relying on Kerio Control for productivity, compliance, and security, disabled categorization turns your expensive UTM appliance into a basic NAT router.
If you want to force the web filter to stay active despite poor network reliability, you can disable the reliability detection in the SSH console.
If the "hot" warning still glares at you from the dashboard, remember: The service wants to work. It is "hot" because it is trying desperately to reconnect. Your job is to remove the roadblock—be it a $50 expired subscription or a wrong DNS entry. Do not ignore this message; an offline web filter is an open door for productivity loss and cyber threats.
Go to → Network → DNS .
Resolving Web Filter Invalid authorization failures - KerioControl
: Kerio relies on Zvelo for URL categorization. The internal security authorization tokens expire every 21 days. A failure to refresh this token triggers validation errors.
“Kerio Control Web Filter is not activated. Categorization is disabled.”
If you are a network administrator managing a Kerio Control firewall (formerly WinRoute), you may have encountered a frustrating red banner or log entry stating:
