Network issues refer to problems that disrupt the normal functioning of a computer network. These can include slow internet speeds, dropped connections, or complete outages. Common causes of network issues are hardware failures, software bugs, or configuration errors. Troubleshooting network issues often involves checking the router, modem, and cables for faults, as well as ensuring that the network settings on devices are correct. Regular maintenance and updates can help prevent many of these problems, ensuring a stable and reliable connection for users.