Mac losing Wifi connection without no reason

An user from my company reports a problem with wifi connection.
They connect normally in one of availables connection in our office and after minutes working with device he lost the connection.
When this happen appears in WIFI status a message that MAC is searching for available networks (like if the user as turned off / turned on the WIFI).
What I already try
- Run Onyx to clean files, logs and other things
- Search to available updates or fixes of OS (no one available);
- Repair permissions;
- Repair disk.
I saw in other foruns and threads that this is know issue.
That is true? There isn't a solution for that?

Hi there Flsouza01,
You may find the troubleshooting steps in the article below helpful.
Wi-Fi: How to troubleshoot Wi-Fi connectivity
http://support.apple.com/kb/HT4628
-Griff W.

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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.

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Same here. Issue is with random routers not in same household.
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From the menu bar, select
 ▹ System Preferences... ▹ Security & Privacy
If there's a closed padlock icon in the lower left corner of the preference pane, click it and enter your login password when prompted.
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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.
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Sounds like your WiFi chip is going bad. Have you gotten it checked by an Apple Store rep ?
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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.
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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

Is there an easy way to switch between ehternet and wifi connection without having to disconnect the ethernet cable?

Hi All
Was wondering if there is an easy way to switch between ethernet and wifi connection on Apple TV without having to disconnect the ethernet cable. The reason I ask is that I find it quicker to use my ethernet connection via a Netgear Powerline Home Theatre Set-up to stream Trailers and Movies on the Apple TV, however this is no good when connecting directly to my Mac to stream music or TV shows in iTunes, so revert to the wifi connection that I created on my Time Capsule to do this.
Would be handy if Apple TV had a menu option where you could manually change the connection type depending on what you were doing, as per above scenario.
Cheers
Brett

brettfromseabrook wrote:
Hi All
Was wondering if there is an easy way to switch between ethernet and wifi connection on Apple TV without having to disconnect the ethernet cable.
Unfortunately not.

My macbook keeps losing wifi connection after restarting and I can't connect to my wifi in recovery mode

I have two problems actually, which I think are connected.
I installed a new hard drive and am in the process of returning my macbook pro to normal. I'm now using Mac OS X 10.6.8 and I want to be able to update to OS Lion.
When my computer is on it can connect to our wifi without any problems (so the password is working). However, everytime I restart, it looses the connection and does not automatically reconnect. This never happened before and I can't seem to figure out where I can change this. All I have to do to reconnect is go to the wifi symbol and choose our wifi code. It then automatically connects without me needing to type the access code.
The seconde problem is when trying to update to OS Lion, when in recovery mode, all I get is a screen asking me to connect to wifi. I choose our wifi and now I do have to type a password, but whatever I do, it does not accept the code. It has nothing to do with capslock or anything like that.
We are sharing our wifi with our neighbour, so changing the password is not an option. But is is just a simple letters and numbers password.

Why not do a "Restore" in iTunes to set it back to factory settings? That will eliminate any previous information that is causing you issues in use. You will have an iPod which you can sync as if it is new with your settings and info.

How to sign in on a domain (account name) with a mac only wifi connected

Hello,
I'm a french IT and whant ton know if it's possible to connect a MAC PRO only wifi connected with multiple account name of domain?
Thanks to reply in french or basic english if it's possible . :-)

First, you will have to get onto the WiFi. You can log onto the local Mac as the admin, enter the WiFi password, and get it so that it connects and reconnects after a Restart without issue.
Second, you have to get onto the Domain. If this (Active Directory or Open Directory) Domain is used to Store ALL User files, you will need to use:
Directory Utility
Directory Utility determines how a Mac OS X computer uses directory services, discovers network services, and searches directory services for authentication and contacts information. You use Directory Utility to:
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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.
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Upon request, i will link the one i got, if anyones interested.

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Hi,
I am having a strange, app-specific problem with my iPad 3rd generation (wifi only, 64GB) running iOS 6.1.3.
When I use the BBC iPlayer app (version 2.0.5.33) to download a TV show to watch offline, my iPad almost always loses wifi connection a minute or two into the download, and it stays disconnected until I go into Settings > Wifi and select my home network again. If I resume the download in iPlayer, the same issue will typically recur within a minute or two.
I am not having any other connectivity problems with this iPad, and other sizeable downloads (e.g. from iTunes, from the App Store etc) are not having the same issue. Similarly, I can stream live BBC iPlayer content without issue - it is just the iPlayer downloads that seem to create this condition (which then effects the whole iPad / all other running apps).
I have tried to "forget this network", resetting network settings and restoring my entire iPad - none of these have stopped the issue. Interestingly, during restore of the iPad I received ugly BIOS-esque messages relating to AppleBCMWLANCore, which have disappeared after a hard reboot (power + home buttons together) - does this indicate a problem with the iPad hardware itself?
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James

Hey James,
I would try out standard third party application troubleshooting and see if that resolves the Wi-Fi issue. :
1. Update your device software
2. Check for app updates
3. Install another app from the App Store
4. Restart the application
5. Restart your device
6. Reinstall the affected application
For more info on each step, check out the full article:
iOS: Troubleshooting applications purchased from the App Store
http://support.apple.com/kb/TS1702
If none of those steps work, then you would want to contact the developer of the application for further assistance.
Regards,
David

Mac loses WIFI Connection...

I just start experiencing this problem since I moved to a house with some DSL router but never experienced it when I was using my own NetGear router with a cable connection. My Mac loses its connection every once in a while and I have to turn off WIFI and select the router again. Since I am the only one having the problem people will say its my Mac, but I am not sure. Perhaps because I am living in a city with about 15 other WIFI networks around my be the problem as before I was living in a more isolated area with only a few WIFI networks.

Wifi problems seem to crop up a lot on here and unfortunately there doesn't seem to be a 'one fix' solution.
However, sometimes any one of the following can help although, unfortunately, not always - in no particular order:
Check wifi security - if it's WEP change it to WPA or WPA2 (preferably, as it's more secure)
Change the wifi channel on the router
Create a new Network Location: http://support.apple.com/kb/HT5289
Reboot the router
Also take a look at this link and the links within the article for other ideas. They mainly reference Lion, but still seem to be relevant to Mountain Lion:
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_conte n t=FaceBook
...and this link:
http://osxdaily.com/2012/11/30/resolving-stubborn-wi-fi-connection-problems-in-m ac-os-x/

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See if you find any help in this discussion:
Tips for Intermittent/slow Wi-Fi connection on Mac Mini.
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Should be more info and help about the update.....which is called 6.3.....in this Apple support document:
AirPort Express Firmware Update 6.3 for Mac OS X - Support - Apple
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Mac losing Wifi connection without no reason

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