wifi keeps dropping since Yosemite upgrade

Thanks Tommi0. The pinging trick is working for me as a temp workaround until Apple releases 10.10.1 upgrade with this bug fix.

Hi, I tried that, but no luck, any other suggestions?

I had this same problem (iMac early 2014). What solved it for me was unplugging/rebooting my modem.

Unplug the power supply to your modem, wait 5-10 seconds, plug it back in. Wait for everything to get back online and try wifi then.

Hopefully that works for you!

I'll try it, but I think its more series than that!!

Tried unplugging the router but still the same problem, my macbook works fine (I haven't upgraded to Yosemite) the iMac will only hold the network for about 30 secs, its connected to the router, on the network diagnostics page, wifi, wifi settings and networks settings are 'green' ISP, Internet and server are 'red'! Any suggestions ?

Didn't work for me!

The ping option didn't work, sorry!

As far as I see it, we should not be trying to find a work around, or hacks to the system. This should be resolved ay Apple ASAP.

How can an operating system be released when the fundamental use of most machines require network access.

There are two options...

1...Revert to a previous operating system that functions correctly.

2...Wait patiently for Apple to resolve the problem.

It just depends on how critical it is for you to have a working machine.

is it possible to revert to an older operating system i.e delete yosemite?

WiFi was very reliable when running Mavericks on my MacBook Air (13-inch, Mid 2013).

But since "upgrading" to OS X Yosemite, WiFi has become very unreliable. My connection drops frequently.

The only variable in my set up that has changed is the replacement of Mavericks with Yosemite.

I hope Apple will very quickly focus its attention on, and resolve, this very frustrating problem !!!

Thanks! It didn't work for me, seems that this is problem that can only be solved by apple.

I have been really apprehensive updating to Yosemite as you may see in another post. Though a friend of mine assured me he is using it an it is fine.

Bit the bullet and...

...WIFI is now horrendous!

Drops out and has to be reset all the time.

When it does work it is intermittent and slow.

Was simply an amazing piece of machine on Mavericks.

All other existing devices at premises continue to work awesome.

My MacBook it only 5 days old.

Maybe Apple can have it back.

I've also been hit with this problem since the upgrade to Yosemite.

It drops every 15 mins or so but interestingly I only lose WAN (internet) access and not LAN access. The Wifi itself remains active since the LAN connectivity is still up but internet access is down for around 30 seconds each time. Some other people (including posters on Mac Rumors) have noticed the exact same problem (WAN drops but LAN connectivity remains).

It's not the router because I've tried 4 different routers and the exact same problem occurs with the same frequency.

I also have a Windows 8 PC on the same network which doesn't suffer dropouts.

Here are something of the things I have tried.. ALL without success so far!

1) Disabling Bluetooth

2) Switching to 2.4 from 5Ghz

3) Setting IPv6 TCP/IP to local-link only

4) Using a different router (see above)

5) Running Wifi in Diagnostics mode

6) Changing channel settings for 5GHz mode

7) Removing all the stored Wifi profiles and adding back new ones with a different name.

AFAIK, this is all the solutions offered so far and yet none of them make the slightest difference in my case. They don't even alter the frequency of the dropouts. Meanwhile, my Windows PC chugs along happily without any network issues, just like my MBA did when it ran Mavericks.

So it seems clear to me that this points to a definite issue with Yosemite. The killer for me is that when the dropout occurs Skype calls bomb out also. Since my livelihood partially depends on using Skype then I'm currently forced into the ridiculous kludge of using a patch cable between my MBA and the router every time I make a Skype call.

Hevelius, did you try to use the ping trick originally mentioned by tommi0?

In Terminal:

ping -i 0.2 <router-ip>

That has been the only thing that has worked for me.

Interestingly, I was able to maintain a stable connection on an 802.11n, 5 GHz Wifi signal at the Apple Store without dropping for 15+ minutes. I can't go more than about 5 minutes on my 802.11g, 2.4 GHz router without dropping WAN. After dropping, I just have to manually click connect to the network I was just dropped from (though it is set to automatically connect to that network). Seems like it is not a matter of 2.4 vs. 5 GHz or a specific channel...

Try the ping trick - it's been a godsend.

The ping trick hasn't worked in fact nothing has, I've had a suggestion to go back into time machine and use a pre Yosemite back up, but not sure if this will uninstall Yosemite, anyone got any ideas!!??