Если проходит Update now - то дело не в фаере.
Покажите:
1. Настройки Networked Computers - Privilege and other settings - Other settings.
2. Настройки Updates - Netwoked Computers - automatic updates.
Покажите:
1. Настройки Networked Computers - Privilege and other settings - Other settings.
2. Настройки Updates - Netwoked Computers - automatic updates.