4 Ways to Fix Wi-Fi Drops on Your MacBook Air
Regarding the MacBook Air: 1. Reboot your router If the drops stop temporarily, your router likely has old firmware or is on a congested channel. Hold Option and click the Wi-Fi icon, open Wireless Diagnostics, then go to Window > Scan to see which channels are clean. Use 5 GHz if your router supports it.
Reset the Mac’s network settings Go to System Settings > Network > Wi-Fi, click the three dots next to your network, and choose Remove Service. Then re-add it. This clears out misconfigured settings that cause drops.
Flush the DNS cache Open Terminal and type
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder. Stale DNS entries can cause intermittent disconnects.Check Sequoia-specific settings On Intel Macs, turn off “Limit IP Address Tracking” in Wi-Fi settings if it’s on. Make sure macOS is fully updated, as 14.x and 15.x patches fixed known Wi-Fi bugs.