Losing network or internet connection after sleep/wake

Best way I found, which by the way seems to have also made my Macbook Pro Internet faster, is to go to network settings / advanced / DNS

from here add 2 new DNS servers to the list, and delete any other that may be in the list, if you can't delete all of them don't worry about it, they will just simply get replaced, add:

8.8.8.8

8.8.4.4

These are google servers and are free, they are know for having good speeds and better security over the default that you router uses.

P.S.

The periods ARE important, after you add these servers the internet will not drop any more and will seem a bit more responsive as well!!!!

The speed up could be related to the DNS servers assigned by your ISP being slower or overloaded but it should not affect you LAN or WiFi working in any way.

I have to said that after dealing with this problem for a long time (Reforger's work around made it better but it didn't completely fixed) since I updated to 10.10.4 the problem seems to be gone, all related to the removal of discoveryd apparently.

"the problem seems to be gone, all related to the removal of discoveryd apparently"

I was (and sometimes still am) experiencing this problem on OS X Mavericks, which does not have discoveryd but mDNSResponder, so discoveryd is probably not the only faulty component.

Yes, I definitely had the same problem on Mavericks, and then for the first three versions of Yosemite as well.

Just now it seem to have gone away for good in 10.10.4

I've been following this thread for months, tried many of the suggested solutions. Chances are, there are several separate issues going on, with similar symptoms, but different causes and solutions. The miracle solutions posted so far on this thread have been generally disappointing.

In my case, I'm on a new Mac Mini. Today, I upgraded to 10.10.4. We'll see if that contains fixes.

Specifically, there is one web page I often use throughout the day. It's usually open in my browser. If I don't use the machine for awhile (how long? Not sure... 30 to 60 minutes, maybe?) the page won't refresh and I have to wait for it for a long time, maybe two or three minutes, possibly longer. At these times, other internet connectivity is also lost. I'm not sure if the onset of the problem coincides with the screen going to sleep.( I'm usually busy and distracted when not facing the screen.) I'm guessing it does.

The problem began when I got my new Mac Mini. At the same time, I got a new bluetooth keyboard and mouse, and also a new Time Capsule. I now use the Time Capsule's WiFi, instead of the WiFi in the modem I get from AT&T. There were several hypotheses to test. Connecting by ethernet instead of WiFi didn't help. That ruled out the possibility that the WiFi on the router was timing out. I tried removing the Time Capsule. That didn't help. Same problem with the old modem/router. I'm planning to get a wired keyboard, to see if Bluetooth is part of the problem, haven't gotten around to it, yet.

I made one change that instantly and permanently eliminated the problem. Not very original, I admit. System Preferences --> Energy Saver -->

"Prevent computer from sleeping automatically when display is off." Enabled

"Enable power nap" Enabled

"Put hard disk to sleep when possible" Disabled.

The problem has disappeared.

I'd rather have the computer and hard disk sleep when possible. I will turn these things on one at a time, and try to narrow it down a bit more. Will also try the wired keyboard. Will report back.

I never hear of that problem happening over ethernet. Wired connections are usually much more reliable than WiFi. When I had DSL I remember a setting for "On Demand" meaning the modem would only connect when needed only, maybe yours have something similar?

I knew the problem was on OS X side because the macbook would do the same at home, office or friends houses, but never experience that problem with wired connections.

Any chance to try the mac mini somewhere else?

Sounds like you can let the hard drives sleep without problem, is always a good idea unless you only have solid state ones.

Thanks for your reply, DieGus83. Now that you mention it, it sounds wrong that the problem persisted when connected by Ethernet, and I can't recall with any confidence. It was a couple of weeks ago. I'll try it again and report back. Next step is allowing the hard disk to sleep.

Well after owning this iMac and using an older Airport Extreme for 6 years with zero issues, this really bites! Ever since I have upgraded software and bought a new Airport Extreme I am completely p i s s e d off beyond belief! I do believe this is software/hardware related as when ever my computer goes into sleep mode sure enough everything gets bumped off the network. I have my iMac wired in via high speed DSL plugged into a Modem then Airport Extreme and I also use 2 Airport Expresses, every time I have my iMac on and I am upstairs watching TV the computer goes into sleep mode and knocks everything out of whack! I have to reset everything or it will just knock one my my expresses off and I need to reconfigure it to work again! This has been going on for 2 years according to this post, and Apple better get on the frickin ball otherwise they can take their new software and shove it. <<<<<<"Sorry, frustrated rant" Currently using 10.10.4

Hopefully this post will help those who have a similar problem as I did. It was quite overwhelming to go through 2 years of posts here with individuals having similar problems but maybe not the same exact problem.

I started to notice this problem January 2015. I’ve I had the same MAC desktop computer since 2008. I currently have 10.10.5 (Yosemite). Every time my computer would go to sleep (even what seemed only to be for 5 minutes) I would have to wait for it to reconnect. This was not a problem for me a year ago. One thing I haven't been able to confirm is whether or not backup programs such as time machine or crash plan will wake up the computer and run. So far, solutions for me have included:

1. My ISP provider was using both traditional IP address servicing and something called IQ7. They came to my house and disabled IQ7. Supposedly this is known to interfere with you-tube.

2. My monitor and computer were both set to 15 minutes. I adjusted my monitor to go to sleep after 10 minutes and raised my computer to 60 minutes. I think this will psychologically fix my problem. In my case both the monitor and PC would go to sleep at the same time after 10 minutes. I’m ok with the monitor sleeping if I leave the computer for a few minutes but I am not ok with loosing my Internet connection. Since I adjusted the computer sleep to a higher setting than the monitor, I can now be aware that my computer has been dormant for 10 minutes or more and wake it back up before I loose my Internet connection. So this has been the best solution for me.

3. The other solution that I like out of these post is the solution of setting up Location Networking and a priority of which systems to run (Wifi, Ethernet, Bluetooth). While this doesn’t really have a significant effect on desktops it probably does help with a laptop.

I had another well known problem with my iMac: I couldn't wake it up via WLAN with my "Remote"-App on iPhone or with my Apple-TV.

Your solution has fixed this problem!

Now, I'm able to wake up my iMac, whenever I want to. Thanks so much!

Please, link your solution also to the threads concerning "wake-on-WLAN"!

Thank you Reforger, for finally putting his way too long of lasting headache to rest.

Amazing. Can't thank you enough!

No fix worked for me after weeks of trying. I ended up writing a program that basically automatically renews the DHCP when the wifi drops. According to my program, I've had 388 failures in the last 91 hours, and did not notice a single one. This program will need to be customized for your SSID, so email me at mac.wifi.fix@gmail.com and I can get you set up. Right now I'm not selling the program, just asking for donations if it works for you 🙂

THANK YOU

hey this worked thank you so much for this article i changed the location and the time and it worked. for any query related ot the support number visit apple support