If the connection between the Cable Modem and the Internet dropped, you would still be able to communicate with all the other devices on the the network itself. (The cable modem used here can also be a DSL router, a fiber connection, or any other high speed connection, this explanation isn't limited to cable modems) If your Internet drops, you only lose connection to the outside world, your internal network is still good.īelow is a general picture of a home network with Intenet. If your Wi-Fi drops, you lose connectivity to everything on your network. Wi-Fi dropping and losing Internet connection are two totally separate things. Deleted the AirPort plist files (fix above) and WiFi has been stable.Rebooted and Disk Utility found no errors.Ran Disk Utility repair again and no errors were detected (then I ran it again for good measure).Reboot in Recovery Mode, use Disk Utility, some errors corrected then return value 8 and was told I had to backup, format, and restore to the drive.Disabled FileVault, waited for decryption to complete.Reboot in Recovery Mode (press Cmd+R as boot sound, hold until you see the Apple logo), use Disk Utility, however no errors were detected.In my case errors were found, and I had to.Disk Utility to verify/correct permissions.

Kext Utility to reset kext permissions, followed by.Disabled AirDrop by using Terminal to run sudo ifconfig awdl0 down.Used Onyx to clear caches, run update scripts, etc.Press Cmd+Shft+G to go to the folder /Library/Preferences/SystemConfiguration/.Many, many things were tried before I got it to stay connected to WiFi reliably, however deleting the networking PLIST files seems to be what finally did it. I was having a similiar issue with 10.10.3 which was not corrected when I updated to 10.10.4.

2015 macbook pro 13 retina.