wifi problem with yosemite 10.10.2

Same for problem for me, no wifi issues under Maverick on the MacBook Pro, upgraded to Yosemite last weekend. At least I only lose the internet connection when it goes to sleep or I move to a different location in my building or at home. Still, what a fiasco. I may go back to Maverick soon...

I have also BIG issues with the wifi on 10.10.2. Very annoying!

No problems with my iPhones and iPads, or older Macs running < 10.10.

Really bad job by Apple! How hard can it be to fix the wifi issues. Have worked before, maybe Apple should try to rollback to the old code which worked fine.

this is insanely frustrating.

My wifi is impossible to use and thanks to you I've discovered that this is caused by Bluetooth, maybe magic mouse idk.

With bluetooth off, wifi works perfectly at full speed.

At first, my 10.10.2 was working perfectly, then I updated the Remote Desktop Client and I'm back in the nightmare.

**** YOU APPLE.

*d a m n

I too have this problem and have even bought a new router (an expensive and recommended one) to help try to solve it. The signal keeps dropping and no method of rectification as recommended anywhere has worked. Really annoying.

I too have experienced issues with my wireless connection after updating to 10.10.2 on my MacBook Air (13-inch, Mid 2011). The connection slows to a crawl and/or/then disconnects. I am finding that I'm constantly having to connect to my ubiquity access point. It is noticeably worse when bluetooth is on.

If there was a fix introduced for wireless it certainly wasn't aimed at the 2011 Air. I guess all we can do is wait for 10.10.20 and maybe it will be fixed by then....😐

My iMac loses connection to wifi since updating to 10.10.2. I had no problems previously.

I can turn wifi off, then turn it back on again, and it works for anything from a couple of seconds to a couple of minutes, then breaks again.

The only solution I have at the moment is to turn off bluetooth and use my old USB keyboard and mouse.

Something in the 10.10.2 update is the cause of this.

Cheers

I also have this Wifi issue, it started when I installed Yosemite. Switching off bluetooth doesn't resolve the problem so I have reverted back to the old fashioned Lan wire connection but this is only possible at home.

10.10.2 is Apple's second attempt at fixing this problem and it is still not resolved, pretty bad for a company that sells its goods as "It just work"!

This is definitively not a router problem.

I just got a new iMac with Yosemite 10.10.2 pre-installed and did connect it to my home network via Wifi only. The connection is not reliable. The link is lost once or twice a day. I also have an iPhone and iPad on IOS 8 and did enable the continuity feature. Since this feature depends on Wifi, it is also unreliable. When I look at the connected devices on my router's Network Map (latest Linksys Smart Wifi router - WRT1900AC), my iMac, iPhone and iPad disappear and reappear often even if they are still connected. It is like apple Wifi based features such as airdrop, airplay, continuity, ... interfere with the wifi network/router in a bad way.

Hope this gets fixed soon since the Wifi-based features are great... when they work. For now, I have connected my iMac over Ethernet to limit the impact, but I can not reliably use the Wifi-based features.

I am beginning to wonder if this is anything to do with Remote Desktop Client - I notice that both Microsoft and Apple have now released patches. I wouldn't have though these pieces of software need to be updated that often - Apple have in fact released two updates in the last 2 weeks. I do use Remote Desktop Client to connect to another Mac, and whilst I haven't used it today, the connection was rock solid. So, since I installed 10.10.2 from scratch, there have been 2 Remote Client updates, and 1 Microsoft Remote desktop update.... Just something to ponder....

If you are having network problems with Yosemite, I would try turning off DHCP and using manual IP assignment. My Netgear router had been crashing about once a day since I upgrade to 10.10.2, and then I noticed the Mac was having a hard time keeping it's IP address, and suspect this is what was eventually causing the crash. Even if your router is not crashing, you might be have same problems causing intermittent connectivity.

To use manual IP assignment, open Network settings on Mac, and jot down what it has assigned. Then, switch to "Configure ipv4 manually" and fill everything in the way DHCP set it, except change the last octet of the IP address to something like 200. E.g., 192.168.1.200. Be sure to set the DNS server under Advanced tab. To be safe, you should also configure your router to make sure the address you chose is excluded from the DHCP pool. In practice, it is probably won't try to use it anyway.

To those that are still having issues with 10.10.2 (I also had issues with the developer release of 10.10.3) - I was surprised that I was able to fix my connectivity issues almost immediately with a simple WiFi router change. I am using a brand-new MBP 13-inch, and all WiFi was fine on 10.10.1, but issue appeared immediately after the 10.10.2 upgrade, and my WiFi fine on other APs but didn't work on my Comcast Motorola router over 802.11 n or g - I could ping any website or DNS server (ARP), but I couldn't send any traditional traffic (TCP or UDP) which lead me to suspect a packet handling change in 10.10.2 and 10.10.3. I tried removing Bluetooth to no avail.

All I had to do was adjust the Beacon timeout to 50, Fragmentation threshold to 2306, and RTS threshold to 2307 in my router settings, as noted here - http://www.pcmag.com/article2/0,2817,2405997,00.asp - my previous settings were 100, 500 and 500 respectively. Somehow those changes to packet handling behavior immediately resolved the issue on my MBP.

Didn't work for me, what i ended up, was changing the router (Dlink 655 to asus n66.) and connect wia 5 ghz. I still can't connect on 2,4 ghz. It just times out. Even with all the suggestions tried. And 5 ghz speed is not what it should be compared to a pc. Get unexplained slow downs.

Hopefully apple will fix this relatively quickly.

Kind regards
James.

My problem started after i updated to 10.10.2! Ever since I updated I haven't been able to connect to the internet at my school! At home no problem but at school I have to share the data from my phone to get online. I hope Apple gets a fix out asap.

I've had a brand new macbook delivered and had issues as soon as I updated to 10.10.2. After many hours trying everything with Apple support they sent me a brand new macbook. Arrived today and the issue was the same, worked fine at 10.10 then wouldn't connect when I updated to 10.10.2. There was a fix for me and it sounds as though it may be similar to others, where some routers work and others don't. My macbook will not connect with a 2.4GhZ wifi but it works perfectly if I change my router to 5GHz. I currently don't have a dual band router, which gives me some problems with other earlier apple devices I have, but this has been fixed today with a call to my internet provider who will switch it for a dual band for £5. Try this if you haven't already done so.

I have contacted Linksys to find out why my home network stopped working reliably after adding an iMac with Yosemite 10.10.2 and upgrading my iPhone and iPad to IOS 8. My router model is WRT1900AC with the latest firmware. This is a know issue that affects many routers from many manufacturers. The root cause according to LinkSys support is:

"Actually, this is an issue will all iOS devices and it affects any networks that it is connecting to. This is due to the fact that iOS version 8.0+ devices, is now using a new Wi-Fi feature network scanning method that is using random, locally administered MAC addresses, to aid users' security/privacy concerns. This has been causing issues specially when implementing restirictions based on the wireless MAC address of the devices. The network map on your router is based on the device MAC address. Once the device starts to change MAC address, this can cause to disappear and reappear on the map using a different MAC Address already."

They told me that the new feature implemented by Apple is not standard. They are currently looking into fixing the problem but there is no deadline. I cannot wait and since I did decide to migrate from Windows to Apple, I bough an Apple router (Time Capsule). It is not feature rich like my Linksys but it is plug and play, supports all Apple Wi-Fi-based features (continuity, airdrop, airplay, etc.) and the router performance is very good. I will still use the Linksys as a secondary router (DHCP turned off) since it acts as a DLNA server.

I am a bit disappointed that Apple did not consider interoperability when implementing new Wi-Fi features. That's life and we have to live with that.