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Mac Self-Assigned IP Address

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Overview

Mac "Self-Assigned IP Address" (169.254.x.x) means macOS could not obtain an IP address from the router via DHCP.

Key Details

  • IP address starts with 169.254 — APIPA address
  • Mac cannot reach the DHCP server (router)
  • Network icon may show exclamation mark
  • Internet access is not possible with self-assigned IP

Common Causes

  • Router DHCP server not responding
  • Wi-Fi connection is weak or intermittent
  • Network cable disconnected or faulty
  • DHCP lease pool exhausted on router

Steps

  1. 1Turn Wi-Fi off and on in menu bar
  2. 2Renew DHCP Lease: System Settings > Network > Advanced > TCP/IP
  3. 3Restart your router and modem
  4. 4Delete Wi-Fi network and reconnect with password

Tags

macmacosnetworkself assigned ipfixtroubleshooting

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Frequently Asked Questions

macOS gives itself a 169.254.x.x address when it cannot get one from your router.