OS X Yosemite 10.10.3 WiFi Problem

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I had the same issues and none of the locations or plist fixes worked for me. It worked on my home WiFi, but not on University networks which are using a sophisticated network of hubs and repeaters.

I have gotten mine going again, in the end i disabled photos from iCloud and added the DNS servers for the networks manually.

To do this, find out the DNS servers for the WiFi network you are using (off another PC or iPhone), then add them under the DNS tab (Network Preferences > Advanced > DNS).

Hope apple sorts this soon, incredibly frustrating!

Hi

having wifi dropping problems and would like to try your solution but I don't seem to have the file com.apple.network.identification.plist !

can you advise? thanks

my list is

file:///Library/Preferences/SystemConfiguration/CaptiveNetworkSupport/

file:///Library/Preferences/SystemConfiguration/CaptiveNetworkSupport/Settings.p list

file:///Library/Preferences/SystemConfiguration/com.apple.accounts.exists.plist

file:///Library/Preferences/SystemConfiguration/com.apple.Boot.plist

file:///Library/Preferences/SystemConfiguration/com.apple.captive.probe.plist

file:///Library/Preferences/SystemConfiguration/com.apple.network.eapolclient.co nfiguration.plist

file:///Library/Preferences/SystemConfiguration/com.apple.PowerManagement.plist

file:///Library/Preferences/SystemConfiguration/NetworkInterfaces.plist

Thank you this seemed to have solved this very frustrating problem

exactly!

Thank You So Much txdirtslingers. This helped me the moment I did it.

I have a 2013 MacBook Pro and the 10.10.3 update has been a nightmare. I finally am back on wifi. I hope the solution sticks. Thanks once again.

Thanks a lot! this seemed to do the trick. Really appreciate it

Thanks so much txdirtslingers! This worked great to fix my problem.

I received technical advice on this issue from two apple support people, one of whom treated me like an idiot, the other of whom couldn't resolve the issue and then on my third phone call I was put through to a Level 3 (senior technical person) who said this connectivity problem was due to too many people on other wireless networks in my area being on the same channel and the only solution was to find the person who the wireless network belonged to each time and get them to reset their router to a different channel! I said that this was not a practical solution and he replied that unfortunately in built up areas, this now happens. I explained my friend had an apple macbook air and was in the same room as me and could connect to all three wifi networks we had access to and he replied that as mine was a different model (macbook pro retina) it had a different wifi card and so could not be compared to hers. He had no other solution for me other than to contact each router owner whenever I wanted to connect to wifi and had difficulties and get them to change their channel number.... seriously!

Fortunately I found this thread and all was resolved in a few instants (after about 2 days lost productivity due to no internet). I called Apple to lodge an official complaint as to why three different apple technical support people did not give me this solution as I was prepared to have to completely wipe my computer so it went back to the original operating system (even though the level 3 guy had said this would make no difference as this issue was due to the wifi in my macbook pro, and nothing to do with Yosamite).

I'm not a technical person and do not understand how apple are not advising people of this work around for people who have upgraded from their original operating system to Yosamite at their first point of contact. Thumbs down to Apple on this and thumbs up to whoever came up with this solution. Thankyou!

Thank you tx. It worked for me. (After I remembered to do the important "Reboot the Mac" part of your clear instructions!)

After having tried the gamut of other "fixes", this seems to have done the trick. Thank you!

And yes, level 1 Applecare support operators are in general pretty useless. It seems they just keyword search for an Apple article without any real knowledge of macs or OSX.

Well done!

This is my problem as well. I did not have the

com.apple.network.identification.plist

file through three successive reboots. So I deleted all the remaining files anyway and rebooted again. That seemed to do the trick but in my case the problem was from deeper in the OS...my HD was dying. The master directory went next, DiskWarrior fixed it, then it happened again, and DIskWarrior couldn't fix it. So now I have a new HD. 😝

Absolutely the best answer I found, after doing al the usual reboot, check etc, things. Never had a problem until yesterday. Had lost wifi on Macbook pro as well but was able to get it to reset to the network. Imac would not connect. Apple TV2 never lost connection , neither did Ipad2. Thanks. May do this just to make sure the MacbookPro is cleaned up.