We've been having similar issues with multiple clients since Tuesday when version 9 was released. Currently have a case open with Eset regarding it. Multiple VPN programs are being blocked, communication with Microsoft Exchange impacted. Windows updates can no longer be installed. Appears Endpoint Antivirus was bundled with firewall from Endpoint Security as there are firewall events being shown in the logs. Rolling back to version 8 is the only fix that worked for us.