Mac WiFi Keeps Disconnecting — Intermittent Connection Loss
Warningnetwork errors
Overview
Mac WiFi frequently disconnecting and reconnecting is commonly caused by network preference corruption, channel congestion, or driver issues.
Key Details
- 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
Common Causes
- 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
Steps
- 1Turn off WiFi, delete these files and restart: /Library/Preferences/SystemConfiguration/com.apple.airport.preferences.plist, NetworkInterfaces.plist, preferences.plist
- 2Create a new Network Location: System Preferences > Network > Location > Edit Locations > add new
- 3Set DNS manually to 8.8.8.8 and 1.1.1.1 in Network > WiFi > Advanced > DNS
- 4On your router, set a fixed WiFi channel (1, 6, or 11 for 2.4 GHz) instead of Auto
- 5Disable Bluetooth temporarily to test for 2.4 GHz interference
Tags
macwifidisconnectingnetworkconnectivity
More in Network Errors
Frequently Asked Questions
macOS stores WiFi network configurations in plist files. Corruption in these files can cause persistent connection issues. macOS recreates them on restart.