Arrakis server is blocked by Windows Firewall
Detailed description:
After you install the Bitdefender Antivirus you need to let the Windows Firewall enabled. In order to solve the issue that you encountered please follow the steps below:
1. Start Arrakis on computer A
2. Set the IP of computer A as Update Location for computer B
3. Try to perform an update on computer B - it will receive error (-1011) - Could not connect to server or proxy
After the Windows Firewall is disabled, the update will work normally.