Mac Self-Assigned IP Address

Mac "Self-Assigned IP Address" (169.254.x.x) means macOS could not obtain an IP address from the router via DHCP. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: 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. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: Router DHCP server not responding. Wi-Fi connection is weak or intermittent. Network cable disconnected or faulty. DHCP lease pool exhausted on router. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Turn Wi-Fi off and on in menu bar. Renew DHCP Lease: System Settings > Network > Advanced > TCP/IP. Restart your router and modem. Delete Wi-Fi network and reconnect with password. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

This article is part of our Mac Error Codes collection on Error Codes Wiki. We provide comprehensive, up-to-date information to help you find solutions quickly.