IMac loses wifi

iMac spontaneously loses wifi in the middle of work, many times a day. Had been fine for a year and now much trouble. iPhone and iPad on same network do not have this trouble.
If I turn off iMac wifi and then turn it back on, network reattaches
Any help? Thanks....

The below has solved my Safari hanging when loading web pages and eliminated my finding the wifi on boot up. It has been a month now and waiting a minute always works for connecting to my airport extreme on boot. I was cleaning behind my desk and realized that the ethernet cable was still attached to the back of the iMac even though I had moved the airport upstairs. I disconnected it. I also opened network preferences. The wifi was moved a long time ago to the top for priority, but the inactive ethernet and firewire were still listed. I removed both the ethernet and firewire so the only connection listed is wifi. My computer has now reliabily found the internet for the last 3 weeks without waiting. It appears that having the other two options disrupts the connection process on boot. It also must cause the computer to continue trying to use the connection when using Safari.

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My imac loses wifi connection when it goes to sleep, how to correct?

My iMac loses wif connection when it goes to sleep. How do I correct?

Are you running OS X Lion? If so there are unfortunately numerous threads on here discussing exactly the same problem. So far there doesn't seem to be a definitive solution, with everyone hoping that Apple will come up with a permanent fix.
Here's a quick search of these forums alone - depressing reading:
https://discussions.apple.com/community/desktop_computers/search.jspa?peopleEnab led=true&userID=&containerType=&container=&spotlight=true&q=Massive%20wifi%20pro blem%20with%20Lion
This 'fix' has worked for a few people but, unfortunately, not everyone:
http://osxdaily.com/2011/11/06/lion-wi-fi-problems-solution-mac/?utm_source=feed burner&utm_medium=feed&utm_campaign=Feed%3A+osxdaily+%28OS+X+Daily%29&utm_conten t=FaceBook

Imac loses wifi repeatedly

I opened the box on the new iMac, and updated software, uploaded some programs (skype, dropbox, firefox). Everything seemed to be working fine.
Then i added firefox sync.
is it a coinicidence that now i have connection problems?
skype connects and drops, connects and drops
efforts to load web pages are successful and then fail.
the ipad also semed to be failing, suggesting a problem with my router.
wired browsing was working fine.
Came home, and added firefox sync to home mac.
Now i cant use firefox without powerbook dropping internet.
However, here i am on safari without a problem.
I dont understand what is going on?
is it Firefox sync? is it something else?

The below has solved my Safari hanging when loading web pages and eliminated my finding the wifi on boot up. It has been a month now and waiting a minute always works for connecting to my airport extreme on boot. I was cleaning behind my desk and realized that the ethernet cable was still attached to the back of the iMac even though I had moved the airport upstairs. I disconnected it. I also opened network preferences. The wifi was moved a long time ago to the top for priority, but the inactive ethernet and firewire were still listed. I removed both the ethernet and firewire so the only connection listed is wifi. My computer has now reliabily found the internet for the last 3 weeks without waiting. It appears that having the other two options disrupts the connection process on boot. It also must cause the computer to continue trying to use the connection when using Safari.

IMac loses WiFi connection after waking from sleep on OSX 10.8.2

Bought a new mid-2011 21.5 inch IMac this week. It is not re-establishing WiFi connection after waking from sleep. Was happening on OSX 10.7 that it came with, so updated to 10.8.2 and same problem exists.
I am running a mid 2012 MacBook Pro with Retina Display alongside, on OSX 10.8.2 and no problems at all. Cannot work out what is causing the IMac to fail and neither can Apple!
Could it be the Netgear Wireless Router 3 years old? Full signal strength!

Me too!
I am on a MAC Pro desktop and I am having the same issues. I go to system preferences and just click the network icon. Then I close mail and when it opens it now sees the network. This is getting very annnoying.

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.

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 OSX Lion 10.7.4 loses Wifi after waking up from sleep

So basically just like my title states, when my computer wakes up from sleep about 70% of the time the internet will not work. My mac does see and connect to my network, but something isn't being sent as I have no connection when trying to surf the web. I then reset my modem and router, and it still doesn't work. What fixes my problem is a reboot or Logging out and back in. I don't know why that does the trick but it does. I have looked at http://support.apple.com/kb/DL1501, however this update is only for 10.7.3. Is there something I can do to fix this problem?
As a side note, if I have Parallels Desktop running my iMac's wifi after sleep will not work, but it will work in the Windows 7 parallel. Why is this?

Hello, this has worked for some...
Make a New Location, Using network locations in Mac OS X ...
http://support.apple.com/kb/HT2712
10.5.x/10.6.x/10.7.x instructions...
System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.
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.

Lose Wifi after return from in Mountain Lion

Ever since I installed Mountain Lion on my 2011 27" iMac, I lose WiFi connection after returning from sleep and I Have to do a restart. Not happy.

http://osxdaily.com/2012/08/02/fix-os-x-mountain-lion-wireless-connection-proble ms/

Imac loses connection

My Imac loses the wireless connection all the time. Problem has been getting worse last couple of weeks. We have no problems with the other laptops, they seem to stay connected fine(apple). Thanks

I have a17inch intel imac that has the exact same issue.... Loads a web page fine, open a link and the net dies... have to turn off airport and turn it back on and it is fine..... some nights, it is literally every other page..... really annoying when trying to get updates or downloading in general otherwise..... Running snow leopard and it is still by far the best computer in the house, bar none even a gaming laptop my wife bought 2 months ago.... please if anyone figures this issue out, let us all know the answer.....

My iMac loses its wireless connection repeatedly

My iMac loses it's wireless connection repeatedly. The only solution seems to be deleteing the wireless network from the Network Preferences, and then deleting the network password from Keychain. But I have to do this five or six times nightly. Help!

Softwre Update would bring you up to 10.7.4 and there have been updates involving WiFi. Also here are some links to potential fixes:
Troubleshooting wi-fi issues
https://discussions.apple.com/docs/DOC-3421
WiFi update 10.7.3
http://support.apple.com/kb/DL1501
Apple DNS Servers:
208.67.222.222
208.67.220.220
Wireless Improvements
Move the Base Station If interference is particularly bad in one part of your house or office, move the base station to another location. But this can be tricky if your AirPort base station has to connect to the broadband feed coming into the house and that feed happens to enter at a particularly interference-prone spot.
Use the 5GHz Band Compared with the 2.4GHz band, the 5GHz band is practically empty. The newest AirPort Extreme Base Station is one of the few Wi-Fi base stations designed for home use that work in that 5GHz band. All of Apple’s Core 2 Duo laptops and iMacs (except the discontinued 17-inch 1.87GHz model) can also use the 5GHz band; with the build-to-order wireless option, so can the Mac Pro.
To switch to the 5GHz band, launch AirPort Utility, select your base station, and switch to Manual Setup. Click on the AirPort button and select the Wireless tab. Select 802.11n Only (5 GHz) from the Radio Mode pop-up menu. Click on the Wireless Options button and select Use Wide Channels. Click on Update to restart the base station.
Currently, no Mac-compatible adapters enable you to use the 5GHz band in older Macs or with older versions of OS X.
These Firmware updates may or may not apply to your system, but may help with your particular problem.
http://support.apple.com/kb/index?page=search&src=support_site.home.search&local e=en_US&q=keyboard%20firmware%20update

Time Capsule continually loses wifi connection

What causes time capsule to continually lose wifi connection with iMac (Early 2011 - 12,2) and how can I prevent this?

Troubleshooting Wi-Fi issues

How to connect my iphone to imac on wifi

Hi
I want to connect my iphone to imac on wifi. Actually i want to use internet on my iphone. So how can i do this ?

If you have a wifi router you can set up/turn on the wifi... set the user name and password wifi in your router... open wifi in general settings on the iPhone... log into your router, user name and password. (If your don't know how to turn on the router wifi. Google the router make and model and you will find instructions on how to do this.)
If you don't have a wifi router and your Mac has wifi capabilities you can hookup to the internet over wifi from your Mac to your iPhone.
System Preferences on the Mac... Network... Wifi... Advanced tab... Hit the '+' to add a user name and password...
Make sure you use WPA2 Personal for Security... Hit ok... Turn on the wifi... Same as above with the iPhone, log into your wifi settings on the iPhone.
*Important point... Use WPA2 for the encryption/Security setting. If you use anything else for this setting, your wifi can be hacked.

HT5502 Douse your iPod touch 4th gen lose wifi redemption even when your using it? If so how do I fix it

I need help with iPod it loses wifi well I'm on FaceTime or apps that use wifi can this be fixed if so how?

Does the iPod connect OK to other networks?
Do other devices have any problems on the network?
Did the iPod work OK before?
Try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Power off and then back on the router
- Reset network settings: Settings>General>Reset>Reset Network Settings
- iOS: Troubleshooting Wi-Fi networks and connections
- iOS: Recommended settings for Wi-Fi routers and access points
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
iOS: How to back up your data and set up as a new device
- Make an appointment at the Genius Bar of an Apple store.
Apple Retail Store - Genius Bar

My ipad 1 loses wifi connections when it goes to sllep. have to go into settings to reconnect. Does this all the time. please help.

my ipad 1 loses wifi connections when it goes to sleep. have to go into settings to reconnect. Does this all the time. please help.

my ipad 1 loses wifi connections when it goes to sleep. have to go into settings to reconnect. Does this all the time. please help.

I have one imac. my wife and i each have our own user accounts and itunes library. How do we share selected music between user accounts?

i have one imac. my wife and i each have our own user accounts and itunes library. How do we share selected music between user accounts?

To give other users read-only access to your library, use the Sharing features of iTunes. Sharing works over the local network as well as on the same computer. See the built-in help for details.
If you want to give full read/write access to more than one user, see the support article linked below.
iTunes: How to share music between different accounts on a single computer

IMac loses wifi

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