What's going on when the ip address is unavailable?

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The reasons why the IP address is unavailable are router problems, DHCP server failure, IP address conflicts, firewall or network security software, network setting errors, wireless signal interference, etc. Detailed introduction: 1. There is a problem with the router: Check whether the router is working properly and whether it needs to be restarted or the firmware updated. 2. DHCP server failure: Try to manually assign an IP address or restart the DHCP server. 3. IP address conflict: Check whether other devices use the same IP address and try to change the IP address. 4. Firewall or network security software: Check the firewall or network security software settings and try to disable or reconfigure them. 5