Imac will not connect to Internet via wifi or Ethernet since upgrade.

since the upgrade to Yosemite I am unable to connect to the Internet via wifi or Ethernet. All my other devices ipad/IPhone 6 work fine so issue is not with ISP.
Any help would be greatly appreciated.

I Have tried starting in safe mode and my internet works fine. But I lose all connectivity after reboot into normal mode.

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Thinkpad Laptop X4F -Will not connect to internet via wifi

I'm not computer savvy so please keep replies dummied down if at all possible. I used this laptop last on Friday and booted it today and cannot connect to the internet via wifi. No problems whatsoever before this. Checked with other computers and devices in the house and the wireless network and internet are working fine.
Checked this laptop and wifi is on (airplane mode off), says its connected to the router (in connections) but icon in tray just scrolls and says "identifying". Using the LAN works fine. Looked at wireless card and it says device is working properly and is fully updated.
This computer is running windows 8 which I'm still having trouble navigating through.
Solved!
Go to Solution.

Have you tried turning off the Wifi and then back on? Windows 8 should have that if you press the start key and typing in Wi-Fi. Click on Settings when you search and something for connections should appear. Turn off WiFi then back on to see if that helps.
Owner of: ThinkPad SL510, X131e, X230 (not fond of)
Other systems: MSI GT640, Sony Vaio PCG 709K, Dell Latitude D430,

My iMac does not connect to internet via wireless after I log in. I have to open network preferences and run the assistant everytime to make it work. Its a new system, updated to Mountain Lion,.

My iMac does not connect to internet via wireless after I log in. I have to open network preferences and run the assistant everytime to make it work. Its a new system, updated to Mountain Lion,.

Hi, this has worked for a few...
Make a New Location, Using network locations in Mac OS X ...
http://support.apple.com/kb/HT2712
10.7…
System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.
10.5.x/10.6.x/10.7.x instructions...
System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.
The interface that connects to the Internet should be dragged to the top of the list.
Instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.
For 10.5/10.6, System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...
208.67.222.222
208.67.220.220
Click OK.
Also, turn off IPv6:
System Preferences » Network » AirPort » TCP/IP tab » Configure IPv6
Or whatever Interface you use.

HTC Rezound Will not Connect to Internet via Mobile Network

Hi,
I recently provided my phone to my youngest son so I went to Verizon and got a new sim card and had them set it up. Everything worked for about a week or so. Now the phone will not connect to the internet via the mobile network. The only way he can connect to the internet is via the WiFi.
I have checked all settings and it all seems fine. I also did 2 factory resets and still no go. I removed the Sim card, booted up phone and turned back off, re-installed the sim card and booted again. Still same problem. Signal strength is good but the 4g or 3g doesn't show up like it used to. When I click on internet it says network not available and tries to bring up the WiFi.
Do I need a new Sim card? Is the phone messed up? Anyone have any idea?

I was having the exact same problem and it was driving me crazy. After reading some other threads, I removed my original SIM card and started up the phone until the home screen tells you the SIM card is missing (Emergency calls only). Switch it off, put the SIM card back in and restarted the phone. Got my mobile internet (4GLTE) coverage straight away.
Hope if works for you too!
Good luck.

Iphone will not connect to Internet without WIFI connection

My iphone will not connect to the internet without a wifi connection.
I have restored the settings many times. But i still have this problem.
I get a message on safari which says 'could not activate celluar data network'
what do i do?

If you have restored your iPhone with iTunes from your iPhone's backup and as a new iPhone or not from your iPhone's backup with no change, have you contacted O2? Your line may need to be reset by O2, which will involve turning your iPhone off whole O2 does the reset at the server, or possibly there is a problem with your SIM card.

G4 iMac will not connect to internet

Hey all.
Got in a G4 iMac 17'' 1GHz. It will not connect to the internet thru ethernet. It works fine through AirPort though. I've tried everything I can think of. Reinstall the OS, create a fresh user account. Nothing works. I'm guessing there is something wrong with the ethernet connector on the logic board. The computer was dirty and had a lot of water marks on it like it had been sitting next to an aquarium so my guess is water might have gotten in the bottom.
Think I'm right? Or is there something else I can try?
Thanks in advance.
Thomas

I've never had to use it, but the OS X CD/DVD that came with the system provides a set of diag tools. You boot from the disc, and run these tools to check hardware on the machine.
I am sorry I don't have any further clue on that specific tool set or how to use as I never have. I simply know it exists.
Quite sure a bit of searching on the forums here will reveal the boot-disc options, etc. Heck... you may find info on the disc itself, try inserting it, opening and see what is what.
Beavis2084

Ipad2 will not connect to internet with wifi

Can anybody help me please. I bought a beautiful 32gb WiFi only ipad yesterday and cannot get it to connect to my home WiFi. It shows a full strength signal but I cannot open email or Safari etc.
I see that there are a lot of people with this problem - what I would like is to hear from someone who HAS fixed it - and how. My problem is that I do not have the knowledge to understand what people mean when they are talking about reconfiguring their routers etc -- can someone lead me through a solution in "Computers for Dummies" fashion?? My router is a Speedtouch and my broadband provider AOL. Would be most grateful to hear from you.
Lisa

hi! i have the same issue with my ipad 2 16gb which i bought about 3months ago. i've been using this with my laptop's internet sharing wireless connection and it's been working real fine until i updated my device's firmware from 4.3.3 to 4.3.5 iOS. my iTunes stopped working normally altogether and started freezing and it drove me nuts! from then on i cannot access the internet through wi-fi for a week now and all my documents disappeared to because i have to sign in to my accounts (like newzik, file apps, documents) but sorry me, i cannot get connected to the internet. i just hope apple would take action on these issues. i don't think it has something to do with my laptops wireless network device because even i'm outdoors i cannot access even public wi-fi networks. my ipad 2 connects to a wi-fi netowrk but cannot access the internet. i tried resetting and restoring my devicce but nothing worked. i have an MSI A6200 laptop on windows 7 64bit by the way.

My iMac won't connect to Youtube via wifi. Ethernet is ok.

For reasons I cannot discover, I cannot open Youtube.com via wifi on my iMac. It will open when ethernet is connected. This is the only site that seems to be affected. It stalls for a second or two, then I get a blank screen and the URL changes to www.youtube.com/?tab=w1. I read through every forum I can find, tinkered with the network settings, deleted cache files for the browsers, etc. Firefox, Safari and Chrome all do the same thing. It was working fine for awhile and I don't believe that we changed anything that caused this, so I am at a loss. Has anyone else had this issue and know how to solve it?

Hi, this has worked for a few...
Make a New Location, Using network locations in Mac OS X ...
http://support.apple.com/kb/HT2712
10.7…
System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.
10.5.x/10.6.x/10.7.x instructions...
System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.
The interface that connects to the Internet should be dragged to the top of the list.
Instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.
For 10.5/10.6, System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...
208.67.222.222
208.67.220.220
Click OK.
Also, turn off IPv6:
System Preferences » Network » AirPort » TCP/IP tab » Configure IPv6
Or whatever Interface you use.

I keep getting error message " server stopped responding" when trying to connect to internet via wifi

My iphone works fine using cellar network, but will not connect to internet via wifi. Ive reset network setting with no diffrence.
Any ideas?

And you can turn the WiFi button on and off?
If yes, then you next need to try to Restore your iPhone from your backup.

My 5yr old iMac will not connect to the Internet. All other computers in the house will, including my Mac pro and iPad. What should I do?

My 5yr old iMac will not connect to the Internet. All other computers at home will, including my Mac Pro and iPad. I'm at my wits end. What should I do?

Which OS are you using (update your user profile).Try a
SMC RESET
http://support.apple.com/kb/HT3964
Shut down the computer.
Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
Attach the computers power cable.
Wait another 5 seconds and press the power button to turn on the computer.
The 5 second timing is important to a successful reset.

My iPhone 4s will not connect with my home WiFi network. I have ios6 on my phone. I have updated my IMac and my MacBook Pro with iOS 10.8.2. Anyone have any suggestions? It was connecting with no problems prior to updating my two computers.

My iPhone 4s will not connect with my home WiFi network. I have ios6 on my iPhone. The connection was working perfectly before I updated my IMac and my MacBook Pro to ios 10.8.2. I have had ios6 since I purchased the phone a couple of months ago. It searches for a network and finds them, but when it asks for my password, it will not accept the password. Have never had this happen before.

Hello krosebear,
Thank you for using Apple Support Communities.
If you are having difficulties connecting your iPhone to a Wi-Fi network, the following article should provide troubleshooting that should help you resolve the issue.
If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network - Apple Support
Regards,
Jeff D.

Imac will only connect to my home wifi via ISP hotspot. All other devices are fine (iphone, ipad etc). its driving me nuts!

My imac (2 yrs old) will not connect to my home wifi with the exception of my ISP hotspot. All other devices are fine (iphone, ipad etc). I have changed my ISP recently and this issue has never happened before. I am with my current ISP for about 7 weeks and this was not an issue for the first 2/3 weeks. Went through the usual set up procedures but alas...nothing. Message states unable to join network! Don't think it is an ISP issue as all other devices work perfect...or is it? As I said It did work at the start, but no longer. I recently moved to NJ from Ireland, so my imac is a European model (don't think that makes a difference?) I can only presume it is the settings on the imac. Any help would be greatly appreciated! Thx

Hi - out of action for a few days. To answer your questions:
- and click on Advanced and make sure everything is correct - all in order
- Also check on your router's website to make sure the iMac is recognized there - it IS NOT recognized here as other devices are
- do you by chance have your router set up to do Mac filtering? - i don't know..how do I check?
Thx

TS1398 My ipad says it is connected to WiFi, which is workingly perfectly for several other devices, will not connect to internet. It keeps giving the message 'Cannot Connect' or error has occurred or just blink off site or icon?

My ipad says it is connected to WiFi, which is workingly perfectly for several other devices, will not connect to internet. It keeps giving the message 'Cannot Connect' or error has occurred or just blink off site or icon?

Some things to try first:
1. Turn Off your iPad. Then turn Off (disconnect power cord for 30 seconds or longer) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
2. Go to Settings>Wi-Fi and turn Off. Then while at Settings>Wi-Fi, turn back On and chose a Network.
3. Change the channel on your wireless router (Auto or Channel 6 is best). Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
4. Go into your router security settings and change from WEP to WPA with AES.
5. Renew IP Address: (especially if you are droping internet connection)
    •    Launch Settings app
    •    Tap on Wi-Fi
    •    Tap on the blue arrow of the Wi-Fi network that you connect to from the list
    •    In the window that opens, tap on the Renew Lease button
~~~~~~~~~~~~~~~~~~~~~~~~~
iOS 6 Wifi Problems/Fixes
How To: Workaround iPad Wi-Fi Issues
http://www.theipadfan.com/workaround-ipad-wifi-issues/
Another Fix For iOS 6 WiFi Problems
http://tabletcrunch.com/2012/10/27/fix-ios-6-wifi-problems-ssid/
Wifi Doesn't Connect After Waking From Sleep - Sometimes increasing screen brightness prevents the failure to reconnect after waking from sleep. According to Apple, “If brightness is at lowest level, increase it by moving the slider to the right and set auto brightness to off.”
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
How To Fix Wi-Fi Connectivity Issue After Upgrading To iOS 6
http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
iOS 6 iPad 3 wi-fi "connection fix" for netgear router
http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
How to Fix a Poor Wi-Fi Signal on Your iPad
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Fix-A-Poor-Wi-Fi-Signal-O n-Your-iPad.htm
iOS Troubleshooting Wi-Fi networks and connections http://support.apple.com/kb/TS1398
iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
WiFi Connecting/Troubleshooting http://www.apple.com/support/ipad/wifi/
How to Fix: My iPad Won't Connect to WiFi
http://ipad.about.com/od/iPad_Troubleshooting/ss/How-To-Fix-My-Ipad-Wont-Connect -To-Wi-Fi.htm
iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Connect iPad to Wi-Fi (with troubleshooting info)
http://thehowto.wikidot.com/wifi-connect-ipad
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

My imac will not connect to wifi what so ever. i have tried 3 different routers and all my other apple devices work fine. when i take it to the genius bar it seems to work with apples instore wifi. thus leading the "geniuses" to say nothing is wrong.

my imac will not connect to wifi what so ever. i have tried 3 different routers and all my other apple devices work fine. when i take it to the genius bar it seems to work with apples instore wifi. thus leading the "geniuses" to say nothing is wrong.

Back up all data before making any changes.
Step 1
Take all the applicable steps in this support article.
Step 2
If you're running OS X 10.8.4 or later, run Wireless Diagnostics and take the remedial steps suggested in the summary that appears, if any. The program also generates a large file of information about your system, which would be used by Apple Engineering in case of a support incident. Don't post the contents here.
Step 3
If you're not using a wireless keyboard or trackpad, disable Bluetooth by selecting Turn Bluetooth Off from the menu with the Bluetooth icon. If you don't have that menu, open the Bluetooth preference pane in System Preferences and check the box marked Show Bluetooth in menu bar. Test. Continue if you find that Wi-Fi is faster with Bluetooth disabled.
From that same menu, select Open Bluetooth Preferences. If the box labeled Discoverable is checked, uncheck it. Click the Advanced button, and in the sheet that opens, uncheck the top three boxes, if any are checked. Click OK. Enable Bluetooth and test again.
If the application called "Bluetooth Setup Assistant" is running, quit it.
Step 4
This step will erase all your settings in the Network preference pane. Make a note of them before you begin, and recreate them afterwards. It may be helpful to take screenshots of the preference pane.
Triple-click the line below on this page to select it:
/Library/Preferences/SystemConfiguration
Right-click or control-click the highlighted line and select
Services ▹ Reveal
from the contextual menu.* A folder should open with an item named "SystemConfiguration" selected. Move the selected item to the Trash. You may be prompted for your administrator password.
*If you don't see the contextual menu item, copy the selected text to the Clipboard (command-C). In the Finder, select
Go ▹ Go to Folder...
from the menu bar, paste into the box that opens (command-V). You won't see what you pasted because a line break is included. Press return.
Step 5
Reset the System Management Controller.
Step 6
Make a "Genius" appointment at an Apple Store, or go to another authorized service center.
Back up all data on the internal drive(s) before you hand over your computer to anyone. There are ways to back up a computer that isn't fully functional — ask if you need guidance.
If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present.
Keeping your confidential data secure during hardware repair
*An SSD doesn't need to be zeroed.

My wireless internet is working with all of my other devices but my imac will not connect to the network?

Can anyone help? My wireless connection is working on both my iphone4S and my ipad2, but my Imac will not connect to the network.

First run Software Update to make sure your iMac is up-to-date.
Even though things are working OK on other devices there may still be issues with your modem or router so it's best to start there. Locate the manuals on both devices and reset each. Do the modem first then the router. Next make sure the router has up-to-date firmware. If the problem continues after updating resetting and updating both devices then download and install iStumbler and let it run for about 30 minutes. iStumbler will scan your area for the Wi-Fi networks being used, pay attention to the channels each network is set to. Most routers are pre-set to channels 5 or 6 and if you are in a congested area and all the routers are set for channel 5 or 6 then you can see where there might be a problem. Set your router's channel to one not being used in your area, you have at least 14 channels to choose from. Also check to see if your router is using 802.11n, if it's not then it would be wise to upgrade the router to a faster device.
Next is if you are still having issues the problem could be your ISP's DNS settings. If you want to learn about DNS please read CNET's DNS Article and MacWorld's DNS Troubleshooting . Then use the instructions below to reset the DNS settings:
1. System preferences
2. Network
3. Click Advanced
4. Click DNS tab
5. Click + sign
6. Add 208.67.222.222
7. Click + sign
8. Add 208.67.220.220
9. Click OK.
10. Exit System Preferences

Imac will not connect to Internet via wifi or Ethernet since upgrade.

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