Here are a few suggested solutions;
Random disconnections: Some users experienced random WiFi disconnections after updating to macOS Sonoma. Solutions included restarting the router, checking for firmware updates, and resetting the Network Settings.
Slow WiFi speeds: Others reported slow WiFi speeds, which were resolved by restarting the router, updating the router’s firmware, and ensuring that the Mac’s WiFi settings were configured correctly.
Inconsistent connectivity: Some users encountered inconsistent WiFi connectivity, with the Mac sometimes connecting and sometimes not. Solutions included restarting the Mac, checking for software conflicts, and resetting the Network Settings.
DNS issues: A few users experienced DNS-related issues, which were resolved by flushing the DNS cache, restarting the router, and checking for DNS server issues.
Bluetooth interference: One user found that Bluetooth interference was causing WiFi connectivity issues. Disabling Bluetooth or moving the Mac away from Bluetooth devices resolved the issue.
VPN conflicts: Another user experienced WiFi connectivity issues after setting up a VPN. Disabling the VPN or removing it resolved the issue.
