Help! Can't connect to the internet!

I was using my macbook yesterday and the battery ran out before I could plug it in. So the system shut down. When I plugged the mac back in, it started up again like normal. However, my internet connection was lost and now I cannot get it back.
I'm using my airport and it is picking up and connecting to the network I was using before the crash. However, when I open Safari, it says I am not connected to the internet.
I've run Network Diagnostics to see if I can locate the problem. It says that the AirPort, AirPort settings, Network Settings, and ISP are fine (the little buttons next to them are green). But when it gets to the Internet button - it says that the diagnostics for it failed. It also says that the Server failed, too.
In the window next to the buttons in the Network Diagnostics page, it says to select a location.
Also, I tried to connect to other networks but with no luck! And I have a roommate using the same wireless network and her internet is just fine.
I have no idea what's going on or where to look to fix this problem. Any help will be much appreciated!

First thing to do whenever a Mac shuts down abnormally is to either boot from the Install CD/DVD and Repair Disk & Permissions, or use/get Applejack...
http://www.versiontracker.com/dyn/moreinfo/macosx/19596
After installing, reboot holding down CMD+s, then when the prompt shows, type in...
applejack AUTO
Then let it do all 5 of it's things.
At least it'll eliminate some questions if it doesn't fix it.
The 5 things it does are...
Correct any Disk problems.
Repair Permissions.
Clear out Cache Files.
Repair/check several plist files.
Dump the VM files for a fresh start.
Then we'll have a better idea.

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Hi
I've just unpacked the new mini I bought today. I use a LAN that I set up myself. I use a Linksys Router 11Mb/s. All computers atached to it work fine, including an iBook G4 with Airport Extreme.
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Try turning your router/modem off. Now connect the ethernet cable to the mini and the router and restart the router/modem. If it works, update the system.
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~~~~~~~~~~~~~~~~~~~~~~~~~
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http://ipadnerds.com/fix-wifi-issue-ios-7/
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https://discussions.apple.com/thread/4823738?tstart=240
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http://www.theipadfan.com/workaround-ipad-wifi-issues/
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Fix For iOS 6 WiFi Problems?
http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
Did iOS 6 Screw Your Wi-Fi? Here’s How to Fix It
http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
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http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
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http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
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https://discussions.apple.com/thread/4010130
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Wi-Fi or Bluetooth settings grayed out or dim
http://support.apple.com/kb/TS1559
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

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Try changing the channel in use in case you're getting interference.
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mrtotes

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Try the following:
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Cheers

Does my problem has anything to do with SSL for mail settings? Cause when I tried re-adding it says something that I should try without SSL, and I did what you said and it gives me this "The IMAP server pop.mail.yahoo.com is not responding. Check your network connection and that you entered the correct information in the incoming mail server field". Ahh.. this is so annoying, Apple what are you doing to me?! Or is Yahoo doing this to me?!
Thank you for your time. Sorry it doesn`t work.

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My MacBook air is connecting to my home wifi but somehow suddenly it just can't connect to the Internet! So I'm having an exclamation mark on the wifi fan......
And my iPhone and iPod are connecting to the Internet perfectly well using the same wifi...

It worked perfectly well for the past 3 months... :((((
I tried to reboot the router and it still doesn't work.....

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Are you asking the make/model of the computer or the AX base station?
Neither, I was interested in the make/model of the cable modem.
Our ethernet connection was fried in an electrical storm so we had to go wireless.
Electrical storms are never a good thing when it comes to electronics. What was/is your current network configuration? Is it something like the following?
Cable modem > (Ethernet cable) > AX > (wireless) > wireless devices
Is there another router, other than the AX, in the configuration? ... or an Ethernet switch? I'm just trying to understand your network to best advise you on how to configure the AX.

Can't connect to the internet

Ok. so i did a search and didn't come across any other problems like the one I'm having.
Let me start off by stating that my laptop is an ibook g4 bought feb, '06 (yes the apple care just ran out).
I'm having a problem connecting to the internet on my ibook, running through a d-link wireless router. I'm using my imac to connect to the internet currently (which works fine by the way). It also is connected through the wireless router.
My ibook has a strange ailment. I open up Safari and all I get is a blank screen, the page is trying to load but the status bar is going no where and does the same in Firefox. So first, I opened Network diagnostics, but the computer freezes and I have to do a hard shutdown. (holding the power button). Next, I tried Disk utility. Verified Permissions, Repaired Permissions, everything is fine. I tried to Verify Disk, and again the computer freezes, will not let me force quit and I am forced to do another hard shutdown. I do the thing where you hold down some key while you're starting up to get into the disk utility so I can repair the disk. This returns clean as well. I downloaded techtool off of my Applecare disk. Did the tests, everything passes. So what's the deal?? I've tried to reset the pram. I even did the Apple Hardware test, everything passed.
I thought it could be my Airport card? It recognizes that there is an internet connection in the top right corner, I even have great signal strength (mostly because I've tried this sitting right next to the router). But still, I can't connect to the internet. Any one have any ideas? I don't know what else to try! Please help!

so i can't believe i didn't try to connect it directly to the router with the ethernet cord. This actually worked. But it still didn't solve my wireless problem. I'm not willing to let my laptop become a desktop. I'm already wired to a plug b/c the battery is slowly dying and has a life of about 5 minutes. I'm not willing to give up my wireless internet too.
I guess now it's got to be the airport card? how do I confirm this? and if it is how much would a new one cost and can I install it myself??

Can connect to my house network, but can't connect to the Internet (other computers can)

Hello,
I'm experiencing a strange problem. Since I started my Mac Pro (cold start) some hours ago, I've lost the hability to connect to the Internet (Safari and Mail say I'm not connected). However, I can connect to 192.168.2.1 (my router) and see its webpage (it says it's connected to the Internet). If I use another computer on the same network, it can also connect to the Internet.
Weirder, if I go back to my Mac Pro with "no internet" and launch Parallels Desktop, then I can use WinXP to browse the Internet; I'm writing this post on my WinXP virtual machine.
This leads me to think there's a problem with how my Mac OS handles the networking. I have checked the Console, but the only related string I found is this:
16.04.13 22:03:25
kernel
SIOCPROTOATTACH_IN6: en2 error=17
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Could it be a DNS cache issue?
I don't see, other than a DNS problem, why I can't connect to the Internet with my Mac OS while I can on my virtual machines. If it was a driver problem, I wouldn't be able to connect to my router. If it's a DNS issue, where are the DNS caches located in order to clear them (I'd trash the folder)?
I could also reinstall the OS (waste of time, btw), but I'd really like to understand the problem, not just clear it and forget about it.
Or better than guesses, anyone already experienced this?
Any help welcome.

If it's a DNS issue, where are the DNS caches located in order to clear them (I'd trash the folder)
No DNS caches, it looks up the alphabetic and then uses the numberic from then on.
http://17.149.160.49
is Apple, Inc main US web site. It that works, and the alphabetic does not, you have a DNS probelm.

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my iMac has no problem seeing my airport extreme (b/g/n), but I can't connect to the internet.
I have tried soft / hard reset & factory reset as well, none of them worked. The extreme just keep flashing its amber light.
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I tried connecting through an Ethernet cable and it didn't have any problem, so it's not my ISP. The only thing I can thing of is that the extreme somehow is having trouble recognizing that assigned IP and that's why I can't get connect to the internet.
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Problem solved!
Every time, I feel so stupid once I find out the answer to my problem.
Here it is from another post by 'dwbird':
"Solution: I found that the service name (optional on the setup) may be optional but if your service doesn't require it and you put a service name in the block it prevents the system from working, hence cannot find the PPoE Server and also cannot get an IP address assigned. Guess the moral of the story is that if it is not absolutely required don't fill in any "optional" blocks"
I deleted the name of my ISP and everything works just fine, the stupidest thing is that this is not the first time...
maybe Apple should consider putting a reminder/warning underneath this OPTIONAL service name field.

Can't connect to the internet with Airport OR ethernet cable

I know many other people are having problems with airport not being able to connect to the internet. I've never had any problems with my mac before, but 2 days ago, it started to act really funny. When i turned it on, my time and date were changed to Jan. 1, 2000, and I kept on getting notifications about configd and mdnsresponder wanting to connect to the internet. I did a little research and fixed that problem. Then, a few days ago, my internet was dropped from my computer completely, and I've never been able to connect via airport since.
The main problem is that even when I plug the ethernet cable into my mac, I can't connect to the internet either. It worked a few days ago, but now my computer can't even connect. It registers that the cable is in the computer, but thats' about it. The Network Diagnostics assistant tells me to restart themodem, and that hasn't been helping at all. Any helpwould be appreciated.

First Reset your Pram to see if resets you clock (the different Date caused the problems. Plus open System Preferences->Date & Time pane. In there make sure you set the current date/time and se if you can have the Mac automatically update the time from a Time Server.

Can not connect to the internet. This is a new problem since I have been using firefox for years.

I can not connect to the internet. I called mediacom due to the problem and they connected me to internet explorer. They indicated I should contact you for help in connecting to the internet. It appears firefox has made some kind of change since last night since I was using firefox for my internet connection last night. Something has changed. Your help will be appreciated.

http://en.wikipedia.org/wiki/Keyhole_Markup_Language
The only way that file opens thru IE8 for me ''(but not actually in IE8)'' is by using the Zip Utility (then IE closes) that is in WinXP and then opening the two image files in the Windows Fax and Picture Viewer.
I think Firefox is trying to display that file because the MIME-type is for '''''text/plain''''' instead of the appropriate MIME-type of '''application/vnd.google-earth.kml+xml''' or '''application/vnd.google-earth.kmz'''
That is something that needs to be configured in the server that is hosting that file type. Sorry, I don't know how that can be fixed. The one support person here that might know lives in Europe ''(I believe)'', so you might need to wait for an answer.

Some of my Mac apps can´t connect to the internet, while Firefox can

All of a sudden, Safari, ITunes, Software Update, can´t connect to the internet. It happens in my office and in my house. Have not checked other networks. Firefox wors fine, as does Mail (for now). What can be the problem?

Please read this whole message before doing anything.
This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.
Step 1
The purpose of this step is to determine whether the problem is localized to your user account.
Enable guest logins and log in as Guest. For instructions, launch the System Preferences application, select Help from the menu bar, and enter “Set up a guest account” (without the quotes) in the search box.
While logged in as Guest, you won’t have access to any of your personal files or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
As Guest, test. Same problem(s)?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
Step 2
The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. The instructions provided by Apple are as follows:
Be sure your Mac is shut down.
Press the power button.
Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone, but not before the tone.
Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on some Macs.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem(s)?
After testing, reboot as usual (i.e., not in safe mode.) Post the results of steps 1 and 2.

I just returned from vacation in the states and I can't connect to the internet

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Run the Network Diagnostics assistant. How far do you get?

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My iPad won't update iOS 7.0.4 software saying it is unable to verify because it can 't connect to the Internet and to try again later. It doesn't display an error message number. Obviously I can connect otherwise you wouldn't be reading this. Any suggestions? Many thanks for your help.

You didn't specify which way you are trying to update - using the Software Update setting on the iPad or by using iTunes. I will assume that you are using iTunes because the kb article that linkd you to here was the one about iTunes error codes.
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Help! Can't connect to the internet!

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