OSX Yosemite Wifi issues

Oh my gosh, I made the huge mistake of upgrading my iMac Late 2012 from Mountain Lion to Yosemite (10.10.4) today and spent the last 10 hours trying to connect to the internet.

Tried all the fixes and workarounds (deactivating Airdrop, logging out iCloud, resetting Huawei router, resetting SMC, zapping PRAM, trashing network preferences, creating custom location, resetting etc...) I could find on here but nothing worked. Disabling Bluetooth isn't an option due to bluetooth mouse and keyboard. When turning off/on Wi-Fi, I will get a connection for 20 seconds before it drops again. All other computers and devices are connecting fine. Ended up using the hotspot feature of my iPhone 6 so I could have a somewhat stable connection but I can't keep doing that everyday !

What's up Apple ? Never had such problems after a OS update. I thought I have been very careful with waiting months after release, but still !!

Well as a benchmark i always try to download 10.10.4 from both the appstore and the website, and files from my isp's ftp server which always max my download capacity.

Same room, same distance from the router, but different pc's manage to download it fine, i tried 3 macbooks, a late 2008 15" one, a mid2014 mba and my mid2014 rmbp, all of them dropped the connection on different parts of the download. i will go buy a usb network card today, this is getting ridiculous.

Apple Support keeps removing any posts that do not comply with policy. So I will try to reword my recommendations to comply with that policy. Support groups are great way to fix issues :-). Sometimes corporations'/peoples' value is based on public perception by others (Second handers, as described by Howard Roake (The Fountainhead)). And than others.... authentic, and true, takes responsibility, their relationships are based on 2 way positive exchange, and respected.

This whole wifi issue goes behind a buggy glitch, it has altered my life. Everything happens for a reason. So I urge you to go further then the crickets you will experience here. Try google search other options.

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hahahahaha.... i love optimism! trying to stay positive myself (or I will be removed from community). My $100 netbook seems to be the easiest, least time consuming, and cheapest fix for me! Its ridiculous! Try going outside this forum to see what others are doing. We can't talk about it here.

Just adding my voice in hopes of a fix. My 2013 MacBook Air routinely fails to resolve DNS after ~5 minutes of usage. Turning the Wifi OFF->ON again fixes the problem, nevertheless this never happened until a couple weeks ago when I "upgraded" to Yosemite. Hopefully this problem is resolved in El Capitan???

I thought 10.10.4 finally resolved all my wifi issues on my Macbook Air 13" Early 2014, but no, as usual, after being stable for a while, I started having connection issues again.Turning the Wifi off and on fixes the issue as usual.

Only suspicious logs I saw where these, but I doubt they are indicative of an abnormal situation.

8/9/15 9:36:56.000 PM kernel[0]: en0: BSSID changed to 6c:70:9f:dc:75:9b

8/9/15 9:36:56.000 PM kernel[0]: en0: channel changed to 149,80

While diagnosing, upon waking up the machine, I was briefly able to ping my internal machines using IP (hostnames would not resolve). The connection quickly took a turn for the worse and traffic stopped flowing.

Here is another interesting hint. Previously I wrote that I am not able to connect to the 5 GHz low band (ch 36,40,44 and 48) with my MacBook Pro 15" Retina mid 2012. This turns out not to be entirely true. It may be possible that this bug only affects channels with 40 MHz bandwidth. I was connected to an Access Point earlier that run channel 40 at 5 GHz low with 20 MHz bandwidth and this seemed to be OK. Unfortunately I can't really test this hypothesis since I can't choose the BSSID I want to connect to anymore with the airport command. Also requesting a particular channel didn't really work. It would be great if Apple would have the facility for advanced users to set things like this. Apparently this was possible before OSX 10.6.

I ended up reverting back to Mavericks after awaiting patiently for each 10.10.x update. I feel terrible for people who bought a laptop/iMac post Yosemite as standard shipping OS. At this point, even temporarily, downgrading to Mavericks seems like a best bet (after back-up) until El Capitan .2 or .3 is out.

Have always upgraded to the newer OS right away since Tiger. This experience has really left me with cautionary tales and I will need to learn to deal with anxiety of not having the latest OS on my machine. But that is what it is. The lesser of two evils.

I hoped thad 10.10.5 would help with this wifi issues but nothing changed today after I installed the update 😟

I am a phd student and I can't work properly because the wifi is failing that often.

At the router Side I can't change anything because thats from the university...

Maybe I should Install Windows on my Macbook until the Problem will be fixed in a uncertain future.

An USB Wifi Stick is not possible because the university uses WPA2 Enterprise auth and it seems there is no one for this wich has mac drivers 😟

Dear norge83

I agree this is a shambles from Apple. Have you checked that a clean install of Yosemite 10.10.5 on a USB stick has the same problem? I'm not sure which hardware you have if it is like mine (MacBook Pro 15" Retina mid 2012) a solution could be to check if an Apple authorised reseller can install a newer version of the Airport Extreme card. I have colleagues that work on more modern hardware and have no problem at all. Mind you this might not work at all and of course can't be done in an Apple store. If you still have warranty I wouldn't recommend this as well, but then I would pester the Apple store to resolve the problem. In my analysis there seems to be a problem connected to specific hardware. You also could consider to downgrade again to Mavericks. Not ideal, but there is a good chance your laptop will work.

I must correct myself. The latest EC Beta has improved the situation. However there are two things.

Firstly it looks like they have hacked their way a temporary solution (hopefully temp because it's still a bit disruptive). Mine appears to detect the connection drop and self restart. Causes my downloads to stop but they fortunately will restart where left off so long as I notice they stopped. Not immediately apparent to me since the difference between little grey icon and little blue icon gets lost in all the other visual details. This is however better than before. So far...

Secondly now my computer repeatedly either crashed or self reboots. Seems to do with the sleep function... Can't win. No more meters after EC for me.

Just discovered that it appears my EC Beta doesn't properly have Edimax USB Wi-FI dongle support as Yosemite did. Seems if I have the dongle plugged in I often get a complete system crash with or without an automatic rebut and sometimes a message saying so but not always, after the computer has gone to sleep. Just what I need. My best work around is now broken... again!!!! Apple stop doing this. OK So I am a beta user and I deserve and expect this. Just a shame that proper public releases still don't fix my Wi-FI issues. More do I have the time to reinstall. Oh well.

Please, he didn't threat anyone. Please do not hold against him personally just because Apple doesn't make reliable computers anymore. All company in current economic climate are driven by maximizing profits at any cost. The primary objective is to meet market's expectation and satisfy shareholders. It's a fortune making business and not the computer company anymore. Making good quality, dependable products is secondary. It's wide spread, very sad event affecting life's quality of every modern society dependable on technology. It's too bad that not every one can see it and realize importance by demanding nothing by the very best for their hard earned money. I'm supporting you Ikrupp 100% and please everyone do not lower your standards, expect the best.

Please, do not wait for the Apple to fix your Wi-Fi problem. They always created some Wi-Fi connectivity issues as long I can remember. I do own Apple computer and portable equipment for many years and do not want to say that but the only resolution or option you have left is purchasing a Windows operating machine. I do have the same Wi-Fi problem since downloading Yosemite on my late 2012 i-Mac last year. My wife's Mac Book-Air works great on Maverick. I should never "upgrade" to Yosemite.

I'm dead too. Was doing the delete the config files and restarting fix for a while. Probably like 2-3 times a month since yosemite came out. Last week my wifi dropped and nothing is working. Combed through every "fix" online and nothing. Even replaced my airport card because someone said maybe that crapped out since my macbook pro is from 2008. Still nothing. It ***** with the new OS set to drop next month. Part of me hopes it fixes all this and part of me is scared to upgrade again and have even worse problems. Should never have left mavericks...