for a different version of Kerio Control, or should I help you troubleshoot your DNS forwarding
If the license is valid but showing unactivated, go to .
: Using Google DNS (8.8.8.8) can sometimes cause authorization failures with Zvelo URLs. It is recommended to use: Cloudflare : 1.1.1.1 OpenDNS : 208.67.222.222 or 208.67.220.220 . for a different version of Kerio Control, or
key token (which typically expires after 21 days) or incorrect DNS forwarding settings. License Issues
Review and verify the Web Filter configuration to ensure it is set up correctly. key token (which typically expires after 21 days)
If Kerio Control is behind another upstream firewall, create an explicit allow rule to those destinations.
: Through the SSH console, verify that the DiaServerUrl in /opt/kerio/winroute/winroute.cfg is set to v4.url.zvelo.com . Phase 3: Technical Fix via SSH : Through the SSH console, verify that the
This troubleshooting guide explains why this error happens and provides step-by-step methods to fix it. Root Causes of the Error
To fix the error, you must resolve underlying DNS resolution failures or modify the firewall's built-in reliability detection settings . This critical error completely stops web content filtering, allowing users to bypass company policies and browse unrestricted.