Q: OSX Yosemite Wifi issues

I have tried all the fixes and the only thing that works is turning off the bluetooth. The internet is still slow but better than nothing.
It is so inconvenient as I can't use my magic mouse and other blue tooth devices.

Is there anyway to complain to Apple direct about this?

I dont know if this helps everyone but I updated the firmware on my Netgear wireless N router by logging into the router (192.168.1.1) and supplying the login and password.  I then went to the update section and downloaded the latest firmware.  Painless.

I have maintained my WIFI connection for several hours now.  My previous record was 45 seconds.

same issue, after struggeling a bit, disabling the bluetooth solved the wifi issue, however this workaround is definitely annoying and impacting the experience !

Its not a router specific issue. I've tried an Asus rt-ac68u, Netgear R6300, and Linksys 4200 and they all fail. My issue seems to happen after I close the lid and let the MBP sleep for a while. Then when I reconnect, wifi drops about a minute later. After I reconnect it stays up. Only happens on 5ghz and WPA2 personal. Lets not assume Apple know this is happening. Report feedback now!!

I have tried all the mentions solutions to this problem and none has fixed it. I run RDP to a terminal server through Jump Desktop application. If you perform any function on Safari it disconnects my session. I have the same problems at my work network on a local RDP connection and also on a remote RDP connection. It has only done this since I have upgraded to Yosemite. Web browsing  speeds are fine it only shows up when you have to have a constant connection like my RDP application. If any one has a solution from any source please post. Thank You

I have tried everything mentioned here. Nothing worked, expect turning off bluetooth. Also it not specific to any one router setup/configuration or brand... since finding out I had the issue... I went on a testing spree... friends homes/school/work/home..... Issues across the board.

Edit:

My Machine: Mid-2012 rMBP

Since I (MacBook Pro 13 inch, late 2012) installed Yosemite, I get kicked off my wifi-network every few minutes. I have to select the wifi-network manually to get connected again, because it won't recognize the network by itself.

In my case, there are apparently two problems, that might or might not be related:

- suddenly getting kicked off the wifi, while other devices (iPhone and iPad) stay connected.

- my preferred wifi-network doesn't get recognized automatically.

It's frustrating!

Please get it fixed!

Turning off Handoff improve alot my wifi speed.

At the moment it seams that the Handoff was the cause of my slow internet speed.

I'll throw my 2 cents in.  Brand new MacBook Pro (September 2014), fully loaded with all options (i7 quad core, 16gb of RAM, 1TB ssd drive, etc.).  Upgraded to Yosemite last night.  Install worked without any issues.  Setup after install was fine.  Apps seem to work fine. 

Safari and Chrome both were terribly slow to resolve to any pages (like a DNS issue).  Also, Pandora had a hard time resolving (through PandaBar).  Pandora sent me an email saying that they kicked me off b/c they saw me connected through 2 different devices (which I was not, just an issue with the MacBook not connecting/resolving to their service).  Google.com would come up but searches would take 3 minutes or more to come up once there. 

Tried to print to my network printer.  Printer is "online".  Print job sat in the queue for about 2 minutes before making it's way to the printer.  I can pull up the printer through the network without any issues. Deleted the printer and reinstalled without any problems, still 2+ minutes for a print job to leave the queue to go to the printer. 

I have the laptop connected to an Apple display via thunderbolt.  I plugged an ethernet cable into the display, passing the hardwired ethernet via the thunderbolt to the laptop.  Internet works without any delays.

Printing, however, is still seriously delayed.  Queue just says "Ready to Print" with the document doing nothing, until it is about 3 minutes later, then it says Printing, Looking for Printer.  And within a few seconds the print job is done. 

I tried a DNS flush (sudo discoveryutil udnsflushcaches), but that did not seem to fix any issues.  I will note that when I searched online for DNS issues, people mentioned mdnsresponder and dnsdiscoveryd services, but I do not see either of those running on my machine in Activity Monitor (with all processes displayed). 

Like many here, I did a clean install of Yosemite yesterday only to find that my networking had gone to ****. Everything was so slow, connections failed, couldn't resolve IP addresses, ping times increased by 10X or more, etc. I tried everything listed in this thread and nothing worked!!! Both my wired and wireless connections were completely unusable. Even worse, my entire network seemed to be hosed: none of my machines could reliably talk to anything outside my house. I tried rebooting every machine, router, and cable modem multiple times. The network was still completely unusable...

Completely unusable until I realized I was a complete idiot: because I'd done a clean install Dropbox was furiously attempting to pull down everything I'd stored in the cloud and was chewing up all available network bandwidth to do so!

As soon as I turned Dropbox syncing off, my problems went away. Turned it back on, and the problems came back almost immediately. So, if you're seeing network problems and slowdowns after having done a clean install, make sure you don't have a cloud-sync service (Dropbox, Google, Drive, etc) that's hogging all of your bandwidth!

I did check that initially (having had that issue when I moved to this new machine a few months ago). Unfortunately, my situation is fully sync'd already for DropBox.  And spotlight is not doing it's usual "re-indexing" upon upgrade.  So I can't agree that Dropbox is the culprit for WIFI being hosed by Yosemite upgrade. 

I think turning off the bluetooth fixed my issue too. Sounds like the issue is with the bluetooth

As adsussman mentioned... this was the first thing that came to mind... DropBox had nothing to with my Wifi issues.. Yosemite is definitely the main culprit here...

As I have mentioned before the only think that has worked for me is turning bluetooth completely off.. since my wifi has been flawless.. and I'm going on a few hours.

I run Dropbox and Google Drive just fine. Turning off my bluetooth did the trick

I changed my wireless channel for the 5Ghz 802.11ac to 48 and it seems to be holding for now.