OS X Yosemite 10.10.3 WiFi Problem

I updated my 2012 15 inch MacBook Pro from 10.10.2 to 10.10.3. My computer still connects to my WiFi network but is now incredibly slow and frequently drops connections. I have tried all the troubleshooting I can find, but the best result I got was 20 minutes of close to normal WiFi. The internet performance is fine when I plug in an ethernet cable (just what I want to do with a laptop), and the numerous other WiFi devises in the house work as expected. Guess I am scheduling an appointment at the apple store, great.

Apple, you need to do better than this. Selling products that heavily depend on WiFi means you can't screw up the WiFi, ever, no excuses, no exceptions. I can and will pay far less for a Windows PC that works just as poorly if this is how Apple intends to do business.

At first, sorry about the poor English.

Following what I read somewhere, I created a new different account, and choose it as a administrator.

Next, i didn´t use any of my icloud backups and "voilá" my mbp early 2011 is now fast as it should be. The speed of the machine, of course, for a HDD, is great now. (my OWC SSD is bricked)

since yesterday, wi-fi signal didn´t drop again, but I don´t know if it´ll be permanent.

I can´t remember the time when my mbp was working good like now. Before that, the connection was dropping every single 30 seconds. And the memory pressure is aways green, without swape used.

Next time, when I buy another SSD and do a clean install I won´t use my icloud settings again.

The sad part is that I´ll have to do all the settings manually.

MBP early 2011.

HDD samsung 320GB 5200rpm.

8GB DDR3 1333Mhz (OWC)

HDD samsung 640GB (OWC optical bay)

I updated my 2011 11'' MacBook Air from 10.10.2 to 10.10.3. My computer still connects to my wifi network but is now incredibly slow and frequently drops connections also. This is becoming annoying!

What does Wireless Diagnostics show?

Wireless Diagnostics

Wi-FI connection drops

Wi-Fi Problems in OS X Yosemite

Wi-Fi Problems in OS X Yosemite (2)

Wi-Fi Problems in OS X Yosemite (3)

WiFi Potential Temporary fix - Yosemite

Also try turning off Bluetooth.

This has become a real problem for me with 10.10.3. My company and I work on iMacs and various Mac laptops all day long, and I have two iMacs, a MacBook Air, and various iPads and iPhone. I had some connectivity problems at times with Yosemite, but now with 10.10.3 it's become a catastrophe. Apple, 'IT JUST WORKS' is now longer true--especially since all my work is pretty much on iCloudDrive these days. when this basic problem has now been going on for AGES with Yosemite and IS NOW FAR WORSE with the new release. One of my iMacs, totally unusable--slowed to the point of a one line email taking up to an hour to send. Websites taking forever to load. iCloudDrive unusable. My MacBook Air only fractionally better. And problems with this iMac, though still somewhat usable. THIS IS URGENT.

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Check the new Photos App Preferences. If icloud Photo library is on, this could be the likely cause. Turn it off and it should be instantly back to normal speed. Let me know if it worked for you.

This helped the slowing problem considerably, and I am waiting to see what happens with the disconnection issue. Many thanks. My main point to Apple is that if you sell a product that says "It Just Works," then it needs to just work. This should be priority 1. I have been on Apple products about 24 years. I have never experienced anything like the problems lately, with programs that are unfinished (Pages shared on iCloud, still in beta, and features removed from the 09 version still not restored) as well as with things that just don't work such as Apple Maps and internet disconnection. I can't believe people as brilliant as those who design Apple products can't hire people to support them with equal capability. Thanks so much for your reply, it was appreciated.

I am working with my MBA 2014 too and it's been catastrophic since I upgraded to 10.10.3. Tremendous loss of productivity (and revenues) not to mention the time wasted attempting to fix this silly problem. I tried all the stuff recommended in OSXDaily: Fix Wi-Fi Problems in OS X Yosemite. Nothing did. Yet my router works perfectly well and all my other devices work fine (iMac with Maverick, iPad air, and iPhone 6). Measured the transfer speed: iPad 17 Mbps download, 13 Mbps upload; iPhone a bit less and the MBA with 10.10.3 a paltry 8 Mbps download when it is luckily connected and 0 Mbps upload. Never been able to measure an upload speed. I brought it to Apple store yesterday. They ran a series of tests and gave it back to me today with a clean bill of health. Everything is fine.... Indeed I could connect to the Apple Store WiFi. Back home, same problem no connection or just a few minutes and it drops. Called Apple, they told me to call Apple Care... or wait for the new update... By the way they acted as if they were not aware of the massive wifi connection problem with 10.10.3. I wonder if Apple people even look at the community support exchanges. Very frustrating. Seems like the reliability of Apple products is getting overlooked these days at the expense of the greed policy: getting more money by selling more new stuff every other quarter. If Apple wants to make a dent into business they are going in the wrong direction. But they are making more money than they ever did, so don't expect any quick reversal.

All, this is a crazy frustrating problem. I tried what 66rover99 recommended, went in to iCloud under system preferences, deselected everything but iCloud Drive, and my WiFi went back to normal (still not perfect, but way better than 1990 dial up modem slow). Hope this helps everybody else.

Dear Apple,

Listen to your customers!

None of the recommended fixes worked for me. However this one worked. I have a Netgear 750C network extender in my second floor where my office is located. My router is at the first floor. I have shut down the extender this morning and all of a sudden the connectivity is back on my MBA when locked on the router. Previously it didn't work (or dropped constantly) when either locked on the extender or the router. I am working with a 2.4 Ghz system. The transfer speeds clock at 12 Mbps download and 7 Mbps upload because of the distance from the router. Not fantastic but I can live with that until Apple issues a working update provided it doesn't start dropping before that. So far it's been stable for about four hours.

With 10.10.3 wifi is worse than ever with requests for pages taking up to 30 secs to even complete (never mind the downloading). I can't use my wifi backup disk at all; OSX crashes and re-starts. Connectivity is basic in the second decade of the 21st century. How can Apple claim to be offering an operating system at all if connectivity is an issue ?

Same here, 2011 MBP ever since Yosemite I have troubles with the wifi, pages loading slow, time outs and then suddenly it works like a charm for a few minutes before pages start to load slow and time out again. Update to 10.10.3 didn't seem to fix anything on my macbook.

I have tried to remove the 'network location' and add new ones (as mentioned in various post as a solution), this seemed to work initially but after a while the problems start again. I am getting really desperate here since there does not seem to be any permanent solution..

try this

: Remove Network Configuration & Preference Files

Manually trashing the network plist files should be your first line of troubleshooting. This is one of those tricks that consistently resolves even the most stubborn wireless problems on Macs of nearly any OS X version. This is particularly effective for Macs who updated to Yosemite that may have a corrupt or dysfunctional preference file mucking things up:

Turn Off Wi-Fi from the Wireless menu item

From the OS X Finder, hit Command+Shift+G and enter the following path:

/Library/Preferences/SystemConfiguration/

Within this folder locate and select the following files:

com.apple.airport.preferences.plist

com.apple.network.identification.plist

com.apple.wifi.message-tracer.plist

NetworkInterfaces.plist

preferences.plist

Move all of these files into a folder on your Desktop called ‘wifi backups’ or something similar – we’re backing these up just in case you break something but if you regularly backup your Mac you can just delete the files instead since you could restore from Time Machine if need be

Reboot the Mac

Turn ON WI-Fi from the wireless network menu again

This forces OS X to recreate all network configuration files. This alone may resolve your problems, but if you’re continuing to have trouble we recommend following through with the second step which means using some custom network settings.

BINGO!! That was the problem and my Internet is now back up and running at full speed! Thanks for the solution! Apple now needs to come up with a fix. It should not have been released this way.