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How to renew an IP address DHCP under Windows

Force Windows to abandon and then re-demand an IP address to a DHCP server.

TopicIT Networking →
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Network. Beginner 3 min

Force Windows to abandon and then re-demand an IP address to a DHCP server.

Avant de commencer : adaptez toujours les commandes et manipulations à votre environnement. Sur un système de production, prévoyez une backup ou un retour arrière lorsque l’action peut modifier la configuration.

Étapes à suivre

  1. 1

    Open a terminal.

    Launch the command prompt or Windows Terminal.

  2. 2

    Release the current address

    Run ipconfig / lip.

  3. 3

    Request a new address

    Then run ipconfig /renew.

  4. 4

    Control the new configuration.

    Use ipconfig /all.

Commands utiles

ipconfig / ipconfig / ipconfig / ipconfig / ipconfig / ipconfig / ipconfig / ipconfig / ipconfig / ipconfig / ipconfig / ipconfig / ipconfig / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconfconffi / ipconfconffi / ipconffi / ipconfconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconffi / ipconf_________________________________________________________________________________________________________________________________________________________________________________________________________________________________
ipconfig /renew.
ipconfig /all.

À retenir

  • The network connection is interrupted between release and the network.
  • If you get an address 169.254.x.x, check the DHCP server and network connectivity.
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Technical deep dive

Windows addressing: useful reference points

Technical checkpoints

  • An address in 169.254.0.0/16 is APIPA: Windows did not obtain a usable DHCP lease.
  • Read address, mask, gateway and DNS
  • Get-NetIPConfiguration gives a structured per-interface view; ipconfig /all remains useful for DHCP lease, DNS suffix and physical address.

Example check

Compare the active adapter, DHCP origin, gateway and DNS before renewing the lease.

Get-NetIPConfiguration
ipconfig /all

Topic-specific pitfalls

  • Renewing DHCP does not fix a wrong VLAN, an unauthorized switch port or a missing DHCP server.
  • A virtual or VPN adapter can appear before the interface actually in use: check InterfaceAlias and the default route.

How to validate

  • The address belongs to the expected subnet and no APIPA is present on the interface in use.
  • Gateway, DNS and DHCP lease match the expected network; the test is repeated after any change.
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