How to Diagnose and Troubleshoot Network Connection Issues in Windows 11 with Command Prompt

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IPConfig

IPConfig commands are a very useful tool for displaying detailed information about your PC’s TCP/IP configuration. By using IPConfig, you can obtain important information regarding your network connection, including IP addresses, subnet masks, and default gateways.

To use IPConfig, open Command Prompt and type:

ipconfig /all

This command will display complete information about all network adapters installed on your computer, including virtual adapters created by software or hypervisors, as well as dial-up connections.

Some additional options that can be used with the IPConfig command are:

  • /all – Displays complete TCP/IP information for all network adapters on a PC, including virtual adapters created in software or by hypervisors and dial-up connections.
  • /displaydns – Displays the contents of the local DNS cache, including preloaded entries from HOSTS files.
  • /flushdns: Clear the local DNS cache. This is useful for addressing connectivity issues caused by incorrect entries in the cache.
  • /registerdns: Restart dynamic registration for all DNS names and IP addresses configured on the PC. It can be used to troubleshoot failed DNS registration or to fix issues between the PC and DNS server without having to restart the PC.
  • /release <adapter>: Sends a DHCPRELEASE message to the DHCP server to discard the current configuration and discard the IP address configuration for all adapters (if no adapter is specified) or for a specific adapter. This is useful for updating network configurations.
  • /renew <adapter>: Updates the DHCP configuration for the specified adapter or all adapters if none are specified. This is very useful for resetting a network connection without having to restart the PC, although it only applies to adapters that are configured to get an IP address automatically.

Conclusion

By using command-line tools such as Ping, TraceRT, and IPConfig, you can easily diagnose and troubleshoot network connection issues in Windows 11. Understanding how to use these commands can help you keep your network connection stable and efficient.

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