Mac WiFi Keeps Disconnecting — Intermittent Connection Loss

Mac WiFi frequently disconnecting and reconnecting is commonly caused by network preference corruption, channel congestion, or driver issues. 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: WiFi drops and reconnects every few minutes. May show 'WiFi: No Hardware Installed' intermittently. Network preferences stored in /Library/Preferences/SystemConfiguration/. WiFi channel congestion in apartments and offices is a common cause. macOS may switch between 2.4 GHz and 5 GHz bands causing brief drops. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: Corrupted network preference files. WiFi channel congestion from nearby networks. Bluetooth interference with 2.4 GHz WiFi. macOS auto-switching between 2.4 GHz and 5 GHz networks. Router firmware bug or compatibility issue. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Turn off WiFi, delete these files and restart: /Library/Preferences/SystemConfiguration/com.apple.airport.preferences.plist, NetworkInterfaces.plist, preferences.plist. Create a new Network Location: System Preferences > Network > Location > Edit Locations > add new. Set DNS manually to 8.8.8.8 and 1.1.1.1 in Network > WiFi > Advanced > DNS. On your router, set a fixed WiFi channel (1, 6, or 11 for 2.4 GHz) instead of Auto. Disable Bluetooth temporarily to test for 2.4 GHz interference. 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.