wifi keeps dropping since Yosemite upgrade

My Wi-Fi issue is weird. I use my Mac in 3 places: work, my fiancee's house, and my house. I have no issues with my Wi-Fi other than at work. It drops sporadically, and is irritating when I am in the middle of something online.

So far o good - will post back towards the end of the day.

coolcomputing, do you know the makes and models of the access points?

I'm wondering if there is a common denominator here.

I see the problem with a Cisco 3702i 5GHz, and a Meraki MR12 2.4GHz, but more stable on a NetGear N300 2.4GHz.

I believe they are Cisco.

Which makes it interesting as the two AP's that I have most problems with are Cisco, Meraki is owned by Cisco.

Wonder if that's anything to do with it, or another clutch at straws.

i would suggest that Apple get its act together and figure out what they broke with wi-fi connectivity between Mavericks and Yosemite.

My wi-fi issue has been resolved. I changed the router setting from 2.4Ghz to 5Ghz and I am getting a good signal. I still have the bluetooth problem of music sounding like a vinyl with a nasty scratch which hopefully will be resolved shortly. A pity my iMac is too old to make use of Airdrop with my iPad Air. I suppose there is nowt I can do about that.

• Copy and paste these instructions, because you'll be disconnected from the Internet and you'll need to reboot.
• Go into your Network Preferences > Select Wi-Fi Service (in the list in the left column) > Click on the options (cog icon) > Select "Make Service Inactive" > Select Apply.
• Select the same Wi-Fi Service > Delete It ( – ). Reboot.
• Return to Network Preferences > Create a New Service ( + ).
• Inside the prompt select Wi-Fi under Interface, name the Service Name something other than Wi-Fi. (I named mine Wi-Fi2. Apparently if you retain the previous Wi-Fi name the WiFi dropping will return on reboot.) > Click Create.
• Click Apply.

This worked for me. keep you updated. thanks.

HI all,

For me the 10.10.1 beta fixed all issues I had with WiFi and Bluetooth.

I haven't tried the beta yet, but I found another workaround for the issue by chance if anyone needs it:

- Open Finder

- Select Airdrop and keep the window open

- Try connecting to your Wifi now (it might drop out the 1st time, but try again and it should stay connected)

Hope that helps 🙂 I'm going to install 10.10.1 and try now

Just FYI - I'm running 10.10.1 Beta - and Wi-Fi still dropped (once) on my MacBook Pro. So no fix quite yet!

Ditto! Just updated and still dropping out... Will have to stick to the Airdrop method till it's a fix

I have this problem as well. Very frustrating. I tried everything mentioned in this thread (except going back to Mavericks).

I have a month old MBP Retina. It sometimes works for a long time without issues and then has problems where connections seem to drop or timeout every couple of minutes.

My wife has a 2011 Macbook Air and it does not have this problem after upgrading to Yosemite, so clearly, this is not a problem for every Mac.

Hi everybody, I solved the problem with no workarounds at all. Drastic decision: format HD, reinstall Mountain lion (which is the OS that came with the computer) and upgrade to Mavericks. Connectivity is back at full speed and stable. I think that the general performance of the machine is better than before.

I don't think I will ever install Yosemite again. In the end for me it was just a different look rather than improved functionality.

Hope this helps

Cheers

Luis