A "Network Error" occurs when a device, such as a computer or smartphone, cannot connect to the internet or a specific online service. This can happen due to various reasons, including issues with the Wi-Fi connection, problems with the router, or disruptions in the internet service provider (ISP) network. When a network error happens, users may see messages indicating that the connection has failed or that the server is unreachable. Troubleshooting steps often include checking cables, restarting devices, or contacting the ISP for assistance. Understanding these errors can help users resolve connectivity issues more effectively.