Imac i5 losing wifi connectivity

My new Imac i5 appears really slow on wifi connectivity, I am not sure if this is the wifi connection or the browser, internet pages just seem to hang and take forever to load, or time out. Yet my Macbook Pro is instant even when in the same room?
Any help much appreciated please?

See if you find any help in this discussion:
Tips for Intermittent/slow Wi-Fi connection on Mac Mini.
Check out discussions listed under More Like This on the right side of this page. Do some Google searching.

Similar Messages

IMac keeps losing Wifi connection

Hello, I'm having an annoying problem where my iMac keeps losing its wifi connection. I've tried many things including messing around with the network preferences and trying an internet range extender. The only thing I can think of is that the distance from my router to my iMac has 4 walls in between, so maybe thats causing the wifi error. The only way to solve this is to disconnect and then reconnect back to the internet. This gets really annoying when I'm watching a video or trying to upload something. Thanks for your help.

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.
Reset the System Management Controller.
Step 5
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.

I am have trouble with 2 new 21.5" iMacs losing wifi connection from my network. I have 4 other vintage iMacs that never lose connection. Please help.

I am have trouble with 2 new 21.5" iMacs losing wifi connection from my network. I have 4 other vintage iMacs that never lose connection. Please help.

This subject has been talked/written about a lot, after Lion was introduced. A solution from Apple has not yet been published, everybody is waiting.
Try for instance https://discussions.apple.com/thread/3734081?start=15&tstart=0, but there are more discussion groups with the same subject: frequently lost WiFi-connections in newer Macs running Lion or up.

IMac keeps losing network connection

My iMac keeps losing the connection to my AirPort very sporadically, but very often. I keep having to open Network Assistant, choose the AirPort and the network, and re-enter the password. I then get a message that my network connection appears to be working correctly, which it then is. This could happen several times in a few hours.
I have tried creating a new network, but it still happens. We have 6 other devices on this network and do not have a problem with those devices.
Any advice?

LB60 wrote:
What am I looking for in the window that pops up?
here's a (very crude) screen shot of an iStumbler scan on my MBP
my network is called pegasus. see that it broadcasts on channel 11 (2.4 GHz band) ? see also that there are six other networks broadcasting on the same channel ? now, ideally i would change my channel to broadcast on "5" or "6", but since there are so many networks around, even those would give me interference from other networks nearby.
in the end, i decided to hardwire (using ethernet cables) most of my devices to my router (time capsule) in order to avoid interference alltogether.
also, there could be closed (hidden) networks around that only KisMac would be able to pick up.
lastly, as the read about *wireless interference* revealed, there are other sources that could interfere with your network performance: microwave ovens, cordless phones - heck, even enabling bluetooth on your very own Mac could be a source.
as an alternative to running ethernet cables throughout your place, you could consider *powerline adapters* _*such as these*_.
JGG

My brand new iMac loses its WiFi connection when it goes to sleep, does anyone have a proven fix?.

I have a MacBook that is about 4 years old and a brand new iMac both are running the most up to date version of Lion. My old MacBook has no issues; however, my iMac loses its WiFi connection every time it goes to sleep. There are some discussions about this already out there but does anyone have a proven fix. This is very frustrating.

I was having the same problem for a long time. I tried everything but nothing seemed to make it stay connected. It was very frustrating. I just got a new Airport Extreme.....bang!.....all better. Problem gone.

IPhone 4 keeps loseing wifi connection

Iphone 4 keeps loseing wifi connection and none of my other household devices lose connectivity. How do I fix this?

Same here. Issue is with random routers not in same household.
5.0.1 issue needs an update soon!

My iMac keeps losing the connection to my chosen Airport Wi-Fi network. Anyone know why this happens?

My iMac keeps losing the connection to my chosen Airport Wi-Fi network. Anyone know why this happens?

Close all Apps and see if Activity Monitor shows any processes runnung.
Not that I think this is the cure but have you tried these resets:
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.
PRAM RESET
Zap the PRAM
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

MacBook Pro losing WiFi connection. Problem with AirPort Card

My MacBook Pro keeps losing Wifi connection. Sometimes it says no AirPort Card is installed. It has also been freezing, and the only solution is to hold the power button to turn it off. Then I have to restart the computer, but everything I was working on is lost.
Any ideas what is wrong or how to fix?

Sounds like your WiFi chip is going bad. Have you gotten it checked by an Apple Store rep ?
Have you deleted the contents of /Library/Preferences/SystemConfiguration, rebooted and tried ?

IPad Keeps Losing Wifi Connection??

Hi,
About 2 days ago, my iPad 2 began losing wifi connection. I would have to tap "Forget this network" and then wait a bit and then tap on the network again and type in the password. After that, the iPad would gain wifi again until about 5-20 minutes later, it loses wifi connection AGAIN. Sometimes when I did that it still didn't even work! And it also bothers me because it still has the wifi sign in the top left corner of my ipad screen, even if the wifi connection is not working. This has happened continuously throughout the past 2 days. Sometimes, the wifi would work for a good amount of time before it was gone again, and sometimes it loses connection after like 3 minutes. But all the other electronics in my house are perfectly fine, it's just my iPad 2 that's been doing this.
I tried to tap "forget all network settings" and then restart my ipad, but that didn't help. I'm not sure if it's the iPad's problem (since all the other electronics work) or if it's the wifi.
Please help! This is very annoying.
(And i have a new update which is 7.1.2, but that's been there for a pretty long time bc I always forget to update it. But I don't think that's the problem.)

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 drooping 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
6. Potential Quick Fixes When Your iPad Won’t Connect to Your Wifi Network
http://ipadinsight.com/ipad-tips-tricks/potential-quick-fixes-when-your-ipad-won t-connect-to-your-wifi-network/
~~~~~~~~~~~~~~~~~~~~~~~~~
Fix WiFi Issue for iOS 7
http://ipadnerds.com/fix-wifi-issue-ios-7/
iOS 6 Wifi Problems/Fixes
Wi-Fi Fix for iOS 6
https://discussions.apple.com/thread/4823738?tstart=240
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/
~~~~~~~~~~~~~~~~~~~~~~~
iPad: Issues connecting to Wi-Fi networks
http://support.apple.com/kb/ts3304
How to Boost Your Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/How-To-Boost-Your-Wi-Fi-Signal.hmL
Troubleshooting a Weak Wi-Fi Signal
http://ipad.about.com/od/iPad_Troubleshooting/a/Troubleshooting-A-Weak-Wi-Fi-Signal.htm
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
10 Ways to Boost Your Wireless Signal
http://www.pcmag.com/article2/0,2817,2372811,00.asp
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 Change Your iPhone’s (iPad’s) DNS Servers
http://www.macinstruct.com/node/558
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.
Some Wi-Fi losses may stem from a problematic interaction between Wi-Fi and cellular data connections. Numerous users have found that turning off Cellular Data in Settings gets their Wi-Fi working again.
You may have many apps open which can possibly cause the slowdown and possibly the loss of wifi. In iOS 4-6 double tap your Home button & at the bottom of the screen you will see the icons of all open apps. Close those you are not using by pressing on an icon until all icons wiggle - then tap the minus sign. For iOS 7 users, there’s an easy way to see which apps are open in order to close them. By double-tapping the home button on your iPhone or iPad, the new multitasking feature in iOS 7 shows full page previews of all your open apps. Simply scroll horizontally to see all your apps, and close the apps with a simple flick towards the top of the screen.
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
PS Make sure you have a good wifi connection when you update the iOS.

TS1398 iPad 2 keeps losing wifi connection about every 3 minutes no matter where I am in my house. Very annoying. help?

iPad 2 keeps losing wifi connection about every 3 mins no matter where I am in the house - Help?

Look at 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
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
Additional things to try.
Try this first. Turn Off your iPad. Then turn Off (disconnect power cord) the wireless router & then back On. Now boot your iPad. Hopefully it will see the WiFi.
Change the channel on your wireless router. Instructions at http://macintoshhowto.com/advanced/how-to-get-a-good-range-on-your-wireless-netw ork.html
Another thing to try - Go into your router security settings and change from WEP to WPA with AES.
How to Quickly Fix iPad 3 Wi-Fi Reception Problems
http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
If none of the above suggestions work, look at this link.
iPad Wi-Fi Problems: Comprehensive List of Fixes
http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
 Cheers, Tom

IMac Continually Dropping WiFi Connectivity

Due to appalling wired "broadband" where I am, I have to connect by tethering an iPhone 5 over an HSDPA cellular connection. That's all fine.
The trouble is that my late 2012 27" i7 iMac keeps losing connectivity although it continues to be - apparently - connected to the iPhone. Symptoms include no Internet connectivity, dropped connections to the Apple TV, etc.
None of my other equipment is affected, so it's not an overall connectivity issue, just with the iMac.
Is this a widely known problem?

Back up all data before making any changes.
Step 1
Take all the applicable steps in this support article. 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 2
Run Software Update and install all available updates for OS X or your computer's firmware.
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. Note: this is not applicable to OS X 10.9 or later.
Step 4
This step will erase some of 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/com.apple.airport.preferences.plist
Right-click or control-click the highlighted line and select
Services ▹ Reveal
from the contextual menu.* A folder should open with "com.apple.airport.preferences.plist" selected. Move the selected item to the Trash. You may be prompted for your administrator password. Recreate your settings for Wi-Fi in the Network preference pane.
*If you don't see the contextual menu item, copy the selected text to the Clipboard by pressing the key combination 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.

Migration of iMac profile killed wifi connection

Hi
I've just bought a macbook and transferred my profile from my iMac (running 10.4.7) to the macbook (10.4.9) yesterday. Basically I have no wifi connection at all now because the Macbook does not recognise the WEP2 password for my router.
I had exactly the same problem when I upgraded my iMac to 10.4.8 and the only solution was to downgrade to 10.4.7 again!
What should I try next?
Thanks
David

Yes the network does show up in system prefs. If I select edit, the password on my Macbook is different to that on my iMac (which works). I've tried changing the password but it just reverts back to a random 68 digit password!!!
Sorry I meant reinstalling OSX, not rebooting. The reason I'm not using 10.4.10 is basically because when I updated my iMac from 10.4.7 to 10.4.8 I had this exact same problem and the only solution was to spend 4 hours at the genius bar of my local Mac store for them just to reinstall 10.4.7. I enquired only last week whether this issue had been resolved with 10.4.10 but people still seemed to be having the same problem.
Finally (I don't know whether this helps) when I first start up my macbook it automatically makes 3 attempts to connect to my router (each lasting about 1 sec) but immediately disconnects each time. It would seem if I could only change the WEP password stored on the computer this problem may go away...
Thanks
David

IPad and iPhone keeps losing wifi connection.

Hi all,
So I'm having wifi connectivity issues that's rather annoying. On a daily basis, both my iPad 1st gen and my iPhone 4S disconnect from wifi and are then unable to connect until i restart my modem. Normally i would think its my modem acting up but no other device on the network has this problem. (All other devices are wifi also) Both my ipad and iphone are current on iOS updates, 5.1.1 and 6.0 respectively. I've tried restarting both devices as well but it doesn't help. Every morning I wake up and every night I get home they both refuse to connect. The iPad stays at my house while the phone remains with me. Any help/input would be great appreciated. Thanks

Although there might be a deeper rooted issue with the iDevices, I did manage to solve the problem another way, I just forgot to give an update in the discussion.
I read in another forum or discussion that the problem might be my wifi signal. I didnt think so at first because it only happened with my iDevices. So, just to be safe, i purchased a high end router designed for extreme gaming and sure enough.. I havent had a single issue with with my iDevices losing connection. From the very moment i plugged it in...no issues. That was about 3 1/2 months ago. All my devices (Laptop, Xbox, Ps3, wii U, Iphone, and iPad) have Excellent connection at all times except when my modem (not the router i purchased) needs to restarted but thats normal and does not happen very often.
So if youre having any sort of connectivity issues with your WiFi i strongly suggest investing in an good router. I wont ever go without one ever again
Upon request, i will link the one i got, if anyones interested.

Losing wifi connection after my powerpc g5 goes to sleep

To the mac expert out there...
I recently upgraded from Tiger to Leopard 10.5.1 for my PowerPC G5 (2GHz) and have been experiencing the problem that when my powerPC wakes up from sleep, I can't recover the wifi connection.
I have tried to the airport connection on and off from the menu bar and also do it from the networks in system preference. But still most of the time, I wont get my connection back until I restart my powerPC.
Is there a way to fix this.
PS, my other new imac (core two duo 2.4 GHz) does not experience this problem.
Thanks,

Hi,
I know this fix is for Tiger, but give it a try - it worked for me when I was having the same problem (admittedly before I upgraded to Leopard)
http://docs.info.apple.com/article.html?artnum=304482
Regards

IMac keeps losing internet connection, won't reconnect!!!!!!!!!!!!

Hello,
I use the wifi in my house to connect to the internet on my iMac. Every 2-3 days it just disconnects and there is an exclamation mark where the wifi bar is. It says there is no ip address and sometimes in half an hour wifi starts up again. Someone after a shut down etc it still doesn't reconnect for hours, it says no ip or if it does self assigned ip.
Network diagnostics doesn't help and it just says your network configuration has changed.
This isn't a os mountain lion issue as I have reset it, its not a problem with wifi connectivity in the house as when wifi is down on my mac it still works on my tv phone ipad etc.

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 & 10.8…
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.
10.4 instructions...
Is that Interface dragged to the top of Network>Show:>Network Port Configurations.
If using Wifi/Airport...
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 10.5/10.6/10.7/10.8, 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.

Imac i5 losing wifi connectivity

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