If network communication was working, but suddenly stopped, the
product's and/or computer's IP address may have changed or is
invalid. Try these solutions:
- Disable IPsec using the product control panel.
- If DHCP is out of date, or the IPv6 address is out of date or
was not obtained, you may not be able to find the IP address
registered in Web Config.
- If that does not solve the problem, enter a static IP address
using Web Config.