Q: Safari DNS problem in Yosemite? Works, then slow death...

I also had very similar problems lately with Safari. I have tried the trick with setting the ipv6 and after a shutdown/restart now it appears to be working... fingers remain to be crossed for awhile, though... Thanks for the tip!

Pages don't load on any browser.

I have read almost all the posts on this issue and find most of them to advanced for me (I'm new with MAC), so I can only agree with you.

Apple SHOULD be doing something about it. Yosemite seemed good but it lasted a few weeks.

I already have 10.10.1 and the problem is even worse.

I need help please !!!

I have tried almost everything with no avail

Finally I called Apple Support and they fix a couple issues in my settings. It's better now, but not solved.

Safari and Chrome a bit better, Firefox terrible.

The guy at Support said they were not aware of this issue....????!!!!!

I told him we were "ALL" in Yosemite suffering the same.

Hope Apple will release a solution fast !!!

it solves my problem.

I had the same problem the last day. The problem is with the DNS stack not finding records, all the other fixes listed are work arounds. Try clearing the DNS stack by following the instructions at http://osxdaily.com/2014/11/20/flush-dns-cache-mac-os-x/, which will clear the DNS and everything works great afterwards.

Thanks DJ Bradshaw. This worked for me.

DJ Bradshaw wrote:

 

The answer is that this  is caused by the discoveryd process being crashed by an application on your system. Restart it with.

 

sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.discoveryd.plist
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.discoveryd.plist

 

You will need to do this every time it stops working, a more long term solution is to find out what application is causing the problem and then disable Bonjour networking in it.

 

See these posts for more info.

 

http://apple.stackexchange.com/questions/151842/yosemite-cannot-resolve-domain-n ames

https://trac.adium.im/ticket/16827

 

It's disappointing that Apple's tech support gave up, rather than fixing the issue.

All - I have a solution for this problem.

In your AnyConnect Group Policy, go to Advanced > Split Tunneling

for "DNS Names" uncheck "inherit" and manually define your LAN's internal DNS domain name.

for "Send All DNS Lookups Through Tunnel" uncheck "inherit" and manually select "no". 

For reasons I've not yet figured out, Yosemite does not like tunneling all DNS lookups through the tunnel.

If this is a sticking point for your environment, you may need to define a separate Group Policy for your OS X users until Cisco/Apple figure out their bug.

It should work immediately after disconnecting/reconnecting to AnyConnect.

Don't forget to save your changes!

-Tim

Okay this problem has been driving me NUTS. Brand new macbook air (2014) and Yosemite 10.10.1 , and I experienced it on Mavericks as well on my iMac. 

Using safari address bar to search the net will always eventually lead me to a page saying Safari Cannot Find Server.

I'm just a regular user. I don't know what most of these responses mean, nor do I feel like I should be as a regular user to have to bore into my system and change 'DNS tunnel settings' or whatever, I just feel like this is a problem that should have been addressed ages ago.

Chrome works, Firefox works.

Only thing that I can do (without restart safari option) is Command option E, and this will temporarily alleviate the problem but  this happens fifty times a day, no matter how basic and innocuous the websites are that I visit.

I've been having the same problem with Safari since Yosemie was released..  (Macbook R late 2013)  "Safari cannot find server"   "you are not connected to the Internet"  I am connected..   I can connect to the Apple Store but Safari  (8.0.2) isn't connecting to the Internet.    It's an intermittent problem..   At the moment of writing I'm connected.  

I did a clean install over the weekend and I noticed that I had full internet connection almost all day,  no drops until I rebooted..   then the haphazard  dropping out returned.    My hope is in the Yosemite fix which Apple are working on.  

This is not only your computer, but with macs (with different OSX) it is a common problem.

I think macs are a bit too finetuned. I have not found a permanent solution, it is also dependant I think by how many people on the same WiFi there are and how the providers server is loaded with users.

Did you read though this thread? There are two things that have been offered as a "solution":

- flush the DNS cache

- change the SystemPreferences->Netwotk->Wifi  settings on the "advanced" page.

Lex

Many thanks Lex for responding to my post.   I keep a close eye on MacRumours and  I have been following this thread so I've been aware of the problems others have experienced.   I did try the DNS cache flush before I reformatted last weekend.  It seemed to improve things for a day or so but it wasn't a permanent solution.  I flushed the cache a couple of times according to the instructions on this forum but then I got so fed up I reformatted.   

Something I should have mentioned before..    I don't use wifi,   I'm connected by Ethernet.      I so wish we could go backwards to Mountain Lion or Snow Leopard until Apple fixes the problem but I realise the hardware on the MacbookPro R isn't suitable for going backwards.   I could regress to Mavericks but I had a similar connection problem with Mavericks.   I'm fascinated though as to why the internet connection was steady and brilliant the day I reformatted UNTIL I rebooted in the evening.  Problem then returned.

Patience now and keeping a sharp eye on the forums is the best I can do at present.

There's also this to try, which I have posted on this thread before.

1. Open System Preferences.
2. Click on Network.
3. Remove all of the services in the left-hand pane (Ethernet, Wi-Fi, etc.) using the minus symbol at the bottom of the pane.
4. Click Apply and close System Preferences.
5. Reopen System Preferences.
6. Click on Network.
7. Add back in the service(s) you want using the plus symbol.

This solved the major problems I was experiencing.

Yes that is another "solution" posted. But that also is most of the time not "definitive".

Thank you for posting.

Lex

Same problem here, bought a brand new MacBook Pro over Christmas (Safari 8.0 running on Yosemite).

I have read through the replies / fixes various users have offered in this thread - but none have worked. I am not a tech person, and I'm guessing many others out there as well are struggling to understand how the problem actually works as suggested by some of the users.

Webpages open, then have the error "Safari can't connect to server", then minutes later it works again. This problem persists with Firefox as well - but on Chrome, everything runs perfectly. As mentioned by some people, opening a site on Chrome and then going back to Safari will enable to page to load.

This seems to be a glaring issue faced by tons of users and needs to be fixed ASAP!

It is very frustrating indeed. maybe (just maybe) update 10.10.2 helps a bit.

The reason why Crome works "better" normally, is because it is very sloppy programming with security leaks and resources leaks. But of you avoid "untrustworthy websites" maybe it is an alternative. If Firefox (fast and safe) has the same issues as Safari, you could also try Opera, which is fast and safe and less of a gaping hole.

Lex