Wifi 'Network Failed' ??? IMac 10.7.5

IMac 10.7.5
HI,
My mac suddenly won't connect to the internet. After selecting the network I would like to use and typing in the password I get the message that the 'Network Failed'? Please Help!
The first time this happened all of the other computers in the house were kicked off the internet but they all connected just fine again after restarting the router.
My computer only connected after I turned the wifi off on the computer and back on again, however, the connection only lasted for about half an hour and this method hasn't worked again since and I am now completely unable to connect to the internet. I have also tried re-starting the computer in safe mode.
Please Help!
Thanks

Try this: http://osxdaily.com/2011/11/06/lion-wi-fi-problems-solution-mac/
It helped me.

Similar Messages

Setting up a WiFi network from iMac... works on "old" iMac, not "new"

Hello,
I hope I'm not crazy, or even worse, stupid.
I an running two iMacs in my home office. Old one= 21" 2 Ghz PowerPC G5, purchased summer 2005 and still running like a champ. New one=27" 2.7 Ghz Intel i5. Purchased the new one July 2011. I have a cable modem plugged into the ethernet port on the old iMac. I've been accessing internet on new iMac with wifi and the internet sharing network I set up on old one. I also use wifi on my ipad and laptop. I have never had even a single dropped wifi connection on any of these devices.
I pretty much expected the same kind of result and performance when I reset the cable modem and plugged it into the new imac and took similiar steps to set up internet sharing/wifi network on new iMac. This has not been the case.
What's happening is:
The cable modem plugged to new iMac is working fine; verified with ISP. I set up wifi network on new iMac and turn on internet sharing. I locate my network name on ipad, laptop, even the old iMac, and I see the name in the list, so I figure so far so good. The signal icon appears in menu bar as usual. I open a web site to verify it's working. And it's working...for about 20 seconds. Then I get alert messages that there is no internet connection.
After creating a bunch of new networks and changing channels, changing type of security, even passwords, I realized I wasn't going to figure this out by myself. I'm not a technical person; Apple spoiled me and I stopped learning how to do anything except plug stuff in 20 years ago.
I started researching online including these discussion boards and answers have ranged from "It's the iMac! It's a hardware problem they never fixed! The aluminum case gets too hot!" to, "there's no airport card and you have to buy an external router." I gave up and called Apple, thinking surely they'd be able to give me a straight answer. Ha ha. Nope.
Of course the bottom line is I could buy applecare (haven't yet...haven't used the computer hardly and I'm still under warranty), I could buy telephone tech support, or I can take the machine to the geniuses.
I keep thinking this can't be that complicated. When I buy a new iMac--this is my 4th one--I expect things will get easier, not this complicated mess.
Oh, last I want to include I just reversed everything back to the way it was. My old iMac is connected to the cable modem and the old iMac is back to being my wifi network, sharing internet with the new imac, my ipad and laptop. Easy as pie.
I'm making an appointment with the geniuseses but hoping it's just something I'm too dumb to realize I'm doing wrong.
Thank you in advance for your patience; any help is much appreciated!

SuznK66 wrote:
It never occurred to me that the wireless network/internet sharing thing wouldn't work just as well if not better on a brand new machine with the improved technologies I pretty much expect. Metal could be interfering with the signal? The machine is aluminum!! I'm no engineer but that seems kind of...flawed. I just don't understand.
I think the WiFi antenna is near an edge of the computer to avoid being encased in metal. It should work like t did in your old computer, but as I said, the use of a Mac to share an internet signal is much less common than use of a router so even if the newer computers have a non-optimal design, it might not get widely noticed in forums like these.
Sounds like AppleCare is what you want, so I'd get it and then have them check that your Mac is transmitting thru the wireless card/antenna as strongly as it should be. The antenna clearly works as you can RECEIVE a signal, but the transmitter uses different circuitry than the receiver. By the way, I think AppleCare is a good thing to get for iMacs and for laptops as they are very compact and tend to be more prone to thermal problems than other desktop computers.
I have no idea about routers aside from, of course, the apple air port one that the phone tech support guy mentioned. Are there others that are less money and just as good? I don't feel like rewarding apple for selling me a product that doesn't do what the earlier geration machines did without a problem. Seems like they shouldn't make another $200 because of their flaw. My old iMac's wifi signal was strong enough for a 3500 square foot house, 2 laptops and an iphone.
Would getting an external router definitely solve my problem? Which one would you recommend if I go that route?
I also did not understand why the Apple routers (Airport) were so much more expensive than other brands. So I purchased a linksys n router some years ago and it has worked quite well. They are very easy to configure through an ordinary web browser (some Mac folks prefer the Airport utilities that are used to configure the Airport routers, but I find the web browser interface very easy to use for the non-Apple routers), and they are in very widespread use (linksys isn't the only brand that is good for this, there are others, but I've had good experience with both Belkin and Linksys). You can get very high performing n routers from Belkin and Linksys for under $100. I'd get a router that has dual band (2.4 GHz and 5 GHz), and I think most include standard features like MAC filtering (a security measure), WPA2 security, and I thiink offering Gigabit ethernet ports would be good also in case you connect something to it like a hard drive server or a printer or want a fast local network sometime in the future.
I think the router will solve your problem and do a better job of wirelessly distributing your internet signal, but if the problem is due to a faulty wireless card (that receives fine but doesn't transmit properly) in the new iMac, I'd want to get that fixed under warranty (or AppleCare) now rather than later.
One more thing: if your wireless card in the new iMac is working properly but the physical layout is such that the internet sharing isn't working well, you OUGHT to be able to eventually get it to work by moving the other devices you are sharing with around to different locations, as eventually one should end up in a spot that works. If nothing can receive the shared internet from the new iMac, even when 3 feet away, then something might well be wrong with the new iMac's transmitter.

Wifi network failing, but Chrome is fine!

Hi,
I've recently started to have terrible problems with my wifi network: i thought perhaps i was losing internet connectivity, but this is not the case.
All i can say is that periodically my internet apps lose connection, and then i will notice i've lost network connection.
Eventually, some of it is restored, but this time i noticed something interesting: I can use Chrome fine, I can now see my network, but apps such as Slack and Safari are totally failing to connect.
This is a brand new Macbook Pro with16GB Ram, a 521MB SSD, and the latest Yosemite OS (10.10.4 14C109)
From my perusing, i noticed that often a log is requested from EtreCheck, so I include one here in advance, taking whilst Chrome is working but Safari etc are not.
Thanks
-Mark
Problem description:
No network over wifi : Chrome is working ok, but Safari is failing as is Slack
EtreCheck version: 2.1.7 (114)
Report generated 30 January 2015 13:45:08 GMT
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Click the [Adware] links for help removing adware.
Hardware Information: ℹ️
    15" MacBook Pro with Retina display, discrete NVIDIA graphics (Late 2013)
    MacBook Pro - model: MacBookPro11,3
    1 2.5 GHz Intel Core i7 CPU: 4-core
    16 GB RAM Not upgradeable
        BANK 0/DIMM0
            8 GB DDR3 1600 MHz ok
        BANK 1/DIMM0
            8 GB DDR3 1600 MHz ok
    Bluetooth: Good - Handoff/Airdrop2 supported
    Wireless: en0: 802.11 a/b/g/n/ac
    Battery Health: Normal - Cycle count 8
Video Information: ℹ️
    Intel Iris Pro
    NVIDIA GeForce GT 750M - VRAM: 2048 MB
        Color LCD spdisplays_2880x1800Retina
        Thunderbolt Display 2560 x 1440
System Software: ℹ️
    OS X 10.10.2 (14C109) - Time since boot: 17:0:59
Disk Information: ℹ️
    APPLE SSD SM0512F disk0 : (500.28 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
        Macintosh HD (disk1) / : 499.10 GB (381.15 GB free)
            Core Storage: disk0s2 499.42 GB Online
USB Information: ℹ️
    Apple Internal Memory Card Reader
    Apple Inc. BRCM20702 Hub
        Apple Inc. Bluetooth USB Host Controller
    Apple Inc. Apple Internal Keyboard / Trackpad
    Apple Inc. Display Audio
    Microsoft Microsoft Optical Mouse with Tilt Wheel
    Dell Dell USB Keyboard
    Apple Inc. Apple Thunderbolt Display
    Apple Inc. FaceTime HD Camera (Display)
Thunderbolt Information: ℹ️
    Apple Inc. thunderbolt_bus
        Apple Inc. Thunderbolt Display
Gatekeeper: ℹ️
    Mac App Store and identified developers
Kernel Extensions: ℹ️
        /Applications/Parallels Desktop.app
    [loaded]    com.parallels.kext.hypervisor (10.1.2 28859 - SDK 10.7) [Support]
    [loaded]    com.parallels.kext.netbridge (10.1.2 28859 - SDK 10.7) [Support]
    [loaded]    com.parallels.kext.usbconnect (10.1.2 28859 - SDK 10.7) [Support]
    [loaded]    com.parallels.kext.vnic (10.1.2 28859 - SDK 10.7) [Support]
Startup Items: ℹ️
    ciscod: Path: /System/Library/StartupItems/ciscod
    MySQLCOM: Path: /Library/StartupItems/MySQLCOM
    Startup items are obsolete in OS X Yosemite
Launch Agents: ℹ️
    [loaded]    com.cisco.anyconnect.gui.plist [Support]
    [loaded]    com.oracle.java.Java-Updater.plist [Support]
Launch Daemons: ℹ️
    [running]    com.cisco.anyconnect.vpnagentd.plist [Support]
    [loaded]    com.microsoft.office.licensing.helper.plist [Support]
    [loaded]    com.oracle.java.Helper-Tool.plist [Support]
    [loaded]    com.oracle.java.JavaUpdateHelper.plist [Support]
User Launch Agents: ℹ️
    [loaded]    com.citrixonline.GoToMeeting.G2MUpdate.plist [Support]
    [loaded]    com.google.keystone.agent.plist [Support]
User Login Items: ℹ️
    Flux    Application (/Users/[redacted]/Applications/Flux.app)
    iTunesHelper    Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
    Dropbox    Application (/Applications/Dropbox.app)
    Alfred 2    Application (/Applications/Alfred 2.app)
    Google Chrome    Application Hidden (/Applications/Google Chrome.app)
    BetterTouchTool    Application (/Applications/BetterTouchTool.app)
Internet Plug-ins: ℹ️
    MeetingJoinPlugin: Version: Unknown - SDK 10.6 [Support]
    SharePointBrowserPlugin: Version: 14.4.7 - SDK 10.6 [Support]
    QuickTime Plugin: Version: 7.7.3
    JavaAppletPlugin: Version: Java 8 Update 31 Check version
    Default Browser: Version: 600 - SDK 10.10
User internet Plug-ins: ℹ️
    CitrixOnlineWebDeploymentPlugin: Version: 1.0.105 [Support]
Safari Extensions: ℹ️
    1Password [Installed]
    Open in Internet Explorer [Installed]
3rd Party Preference Panes: ℹ️
    Java [Support]
    MySQL [Support]
Time Machine: ℹ️
    Skip System Files: NO
    Mobile backups: ON
    Auto backup: YES
    Volumes being backed up:
        Macintosh HD: Disk size: 499.10 GB Disk used: 117.95 GB
    Destinations:
        TimeMachineBackup [Network]
        Total size: 1.92 TB
        Total number of backups: 15
        Oldest backup: 2015-01-11 18:24:44 +0000
        Last backup: 2015-01-30 13:01:55 +0000
        Size of backup disk: Excellent
            Backup size 1.92 TB > (Disk size 499.10 GB X 3)
Top Processes by CPU: ℹ️
        15%    WindowServer
         6%    prl_vm_app
         4%    Google Chrome
         3%    Safari
         3%    prl_client_app
Top Processes by Memory: ℹ️
    893 MB    prl_vm_app
    567 MB    idea
    447 MB    Finder
    395 MB    prl_client_app
    326 MB    WindowServer
Virtual Memory Information: ℹ️
    2.55 GB    Free RAM
    6.92 GB    Active RAM
    4.39 GB    Inactive RAM
    3.31 GB    Wired RAM
    27.59 GB    Page-ins
    3 MB    Page-outs
Diagnostics Information: ℹ️
    Jan 29, 2015, 08:47:06 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/QuickLookSatellite_2015-01-29- 204706_[redacted].crash
    Jan 29, 2015, 08:45:43 PM    Self test - passed
    Jan 29, 2015, 02:48:07 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/p4v_2015-01-29-144807_[redacte d].crash
    Jan 29, 2015, 02:39:13 PM    /Library/Logs/DiagnosticReports/p4v_2015-01-29-143913_[redacted].hang
    Jan 28, 2015, 02:00:38 PM    /Library/Logs/DiagnosticReports/App Store_2015-01-28-140038_[redacted].hang
    Jan 27, 2015, 04:51:03 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/Google Chrome_2015-01-27-165103_[redacted].crash

1. Power off the router. Unplug it from the wall. Wait a while.
    Plug it back to the wall. Power the router on. Wait until all the lights are lit properly. It will take a while.
    Restart the computer.
    Start up in Safe Mode.
    http://support.apple.com/kb/PH14204
2. Deselect Proxies if selected.
   System Preference > Network > Advanced > Proxies Tab
   Under "Select Protocol", uncheck any box if selected.
   Click "OK" then "Apply”.

WiFi Network Locking iMac Up

I have an issue that I believe I have narrowed down to my WiFi network. Starting about two weeks ago, my late 2012 iMac started freezing up. It was happening with all apps. Eventually the apps would un-freeze, but it was not uncommon for the Mac to become unresponsive for ten or more minutes. I have a late 2013 retina MacBook Pro that is configured almost identically to my iMac and there are no issues with that machine. I took the iMac to the genius bar today to have them run some hardware tests and everything checked out just fine. So, I came home and attempted to do a fresh OS install. When I went to set up the system from scratch, it would get as far as setting up the user account and then it would lock up. I tried several times to no avail. I finally tried accessing the internet via the hot spot on my iPhone to see if maybe it was an issue with my WiFi network. There were absoutely no problems and my iMac completed the setup.
I have an Actiontec Q1000 router with a new Time Capsule. Is there anything in my Time Capsule or router settings that would be causing these problems with my iMac? It's strange that it worked just fine when I accessed the internet through my iPhone hot spot. I've never had a WiFi network cause problems with any of my machines and it's strange that it's not causing problems with my retina MBP or any of the other Macs in the house.
Any feedback would be appreciated.
Thanks, Greg

Yes, I have a Fusion drive, but this problem is new as of two weeks ago. I've had the iMac for a little over a year with no problems. This is more than just a slowdown though. It's definitely something wrong with the iMac. I suppose it could be related to 10.9.1, but I haven't read anything about other people having this issue. And, it's strange that it works just fine when connected through my iPhone hot spot.

Imac failing to see any wifi network

I have an Imac which is just over 6 months old (purchased December 2011) running LION, it has been connected to our wifi network since we set it up and there have been no problems, the mac has also been able to see other wifi nextworks available in our area.
A few days ago the Imac suddenly had no wifi and on turning the WIFI on and off it became apparent that when it scans for wifi it can see no wifi networks at all.
I have rebooted the machine and the router etc to no avail and all other Macs, phones and ipdas etc are able to see and use the wifi network successfully?
Has anyone had this problem? is there anything more I can do before I box it up and take it into the Mac Store to see an expert?
I assume its a hardware failure?
PS I have connected the mac with an ethernet cable and that works fine, its just not able to see any wifi networks.
Regards
Dave

Hi!
I bought my imac 21,5 before 2 months after all lies from people dont understanding computers.
Yes, I have exact same problem. I am using safari then suddenly the wifi is off. And it scans for wifi networks but it cant find any networks. I am using my old pc now and writing this post. If I restart the imac the wifi gets normal and i can see my network and other networks.
I have applecare too, 3 years. But i dont know what to do. If you ask apple they will told you "the problem is unusual, or they will told you its not usual that people get problem with mac. If you ask mac users, they will told you "you never get problem with mac" BUT THEY ALL LYING!
(i have other problems too with my imac. sometimes when the screen enter sleep mode I cant turn it on with the magic mouse or keyboard. I can only turn it on with screen-powerbutton then after maybe 10 sec the login-screen turns black. then I start the screen again with screen-powerbutton the screen turns black again.etc.)
Of course it is hardware issue (I am expert user of pc) but the problem is Apple dont want to belive that a mac can get problem. And people using mac are afraid of the word virus or computer problem therefore they buy from Apple.

I'm trying to transfer data (docs, emails) from G4 iMac running os 10.3.9 to brand new iMac on 10.8.1 I'm stuck, any help greatly appreciated. (Ethernet or wifi networking are both options if I can figure out how to get the machines to communicate.)

I'm trying to transfer data (docs, emails) from an old G4 iMac running OS 10.3.9 to brand new iMac on 10.8.1 I'm stuck, any help greatly appreciated. (Ethernet or wifi networking are both options if I can figure out how to get the machines to communicate.)

AMoriyama wrote:
I have the old machine backed up onto an external firewire disk but can't hook that up to the new imac as I'm waiting for delivery of a firewire 400/800 adaptor - therefore starting the old machine up as a slave is also subject to the same delay.
I was hoping there might be some way to create a network between the 2 machines (and 2 different versions of the OS) to be able to transfer data across immediately but perhaps I'll just have to wait for my firewire adaptor to arrive.
I don't understand why you're buying a Firewire adaptor, since AFAIK both of your computers have Firewire already built in.
All you need is a firewire cable. Connect the Firewire socket on the old machine to the Firewire socket on your new iMac.
Then start the old machine in Target Mode (i.e. by holding down the T key on its keyboard, while it's starting up, until you see the three-legged T icon hopping around the screen of the old machine.)
At that point you will also see a new icon on the screen of your new iMac. This is the hard drive of your old machine. By clicking on it you can navigate through it any way you like, just as you would normally.
Just drag across whatever you want from the old computer to the new one. This will leave everything on the old computer untouched.
- or use Migration Assistant but in my experience, Migration Assistant isn't very reliable and fails to migrate large amounts of stuff.

I am trying to connect to my Wifi Network. It is a Galaxy Nexus. I am trying to connect to this Hotspot. I have an iMac that works fine with my network but for some reason with this computer I cannot connect.

So far I have pulled the system configuration file, I have reset safari, I deleted all old passwords from the wifi network in Keychain I restarted both devices. I am at the end here and I cannot get it to work I have an iMac that works fine with my network but for some reason this computer will not connect. It is system wide specifically to my personal hotspot. I can connect fine to any other network (wifi) but just not mine. I have not changed any wifi settings. I have been trying to figure this out. I have a MacBook Pro Late 2006 model running Lion (10.7.5) So any ideas anyone? Please help!

12. At a WiFi hotspot, you can't get connected. The most frequent reason is the login screen for the WiFi hotspot is only able to be connected with a single type of browser. If Safari doesn't work, try Firefox, Chrome, Omniweb, or Opera.
From my tip:
https://discussions.apple.com/docs/DOC-6411

How do I add an Airport Express to extend the range of my WIFI network with my iMac as a base station?

Hi people
I need help to configure a new Airport Express only to extend the range of my WIFI network.
My ethernet cable from modem is connected directly in my iMac and I am sharing the internet by WIFI inside home very fine.
Now, I would like connect my devices on my garden on backyard.
I can't move my iMac from their place and i just want add a Airport Express between the iMac and backyard to extend the range of WIFI.
But I can't to configure to that. On Airport Utility appear the Airport Express connected directly to internet globe, but don't work.
So, what can I do? What is wrong?
Thanks all and best regards.
Carlos Sgrillo, from Brazil.

The AirPort cannot do what you ask.
The Airport needs to connect to a modem, or another router......not to a computer.
The Express can only extend a wireless signal that has been provided by another Apple router.

How do I remove a wifi network account from iMac? Or how do I encrpyt an open wifi network account to make it secure?

Somehow a wifi network connection has been created either on my airport router or iMac or iPad which is non secured, I.e. Open. I cannot workout how to delete it or make it a secure connection. My concern is that other users may able to access my computers via this open wifi connection.
What can I do to correct this?

click on the wifi icon and go all the way down to network preference click and open it once you on network window on the bottom right there is a advance icon click that then you should be able to delete all the network that your mac is remember.
hope this is help.

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.

My iMac suddenly no longer connects to wifi network when in KIOSK (username) mode, and only connects when as ADMINISTRATOR mode. Its strange because the iMac has been working fine in KIOSK mode for over a year until 2 days ago.

My iMac suddenly no longer connects to wifi network when in KIOSK (username) mode, and only connects when as ADMINISTRATOR mode. Its strange because the iMac has been working fine in KIOSK mode for over a year until 2 days ago.

One of the memory cards was indeed faulty, and the other completely fine
Thanks very much for all your help!
Although there is one little thing that I've noticed. The iMac works properly, but I tried to software update to see if that may help my Minecraft sound issue (as I still don't think only having 2GB instead of 4GB would cause such a problem) but the software update application won't work. Running the "Software Update" from the apple menu on the toolbar gains no response, nothing happens. If I run the software update from system preferences, the application icon appears for a second, then disappears (as in the blank app. icon, the blank canvas with the pencil, pen and ruler in the bottom right corner). It does this every time I try to run it. It did work when the computer was crashing, but this started when on one of the occasions I ran the app. while it was crashing. Since this occured during the crashes, and still occurs now, I'm wondering did something simlar happen minecraft, as it's sound disappeared during the crashes and is still gone now.
However, the computer is now working again without crashes, which is the main thing, thanks for helping me fix the issue
Edit: I would mark the topic as solved, but I'm unsure if this would lock the topic or something simlar, so I'd rather leave it open for any ideas regarding the software update and Minecraft issues I'm having

How do I share wifi data between iMac and windows based computer on wifi network?

I have an unsecured wifi network at home and need to easily share photos between computers> I have an iMac and a couple window based computer> Is ther an easy way instead of using a thumb drive?

Since photos are typically large files it will probably be quicker with the thumb drive. The other way is to set up sharing where the files are located and directing the other computers to look there.

Have just acquired an iMac and have tried to connect it to my old pc, running vista, on my wifi network. I recocnises my pc but I cannot get the pc to recognise the iMac

I am struggling to connect an iMac and a vista pc on a wifi network. The iMac recognises the pc but the pc cannot see the iMac

**DELETED**

New 27inch iMac keeps asking to choose Wifi network. How do I stop it?

I recently purchased the new 27inch iMac and i'm really enjoying everything except this little annoyance. Everytime my computer restarts or goes to sleep, it automatically asks me to join a wifi network when I start it up again. I've already selected my home network as my default network that I want it to connect to but it keeps asking me to choose a network anyways.
If I 'x' out of the the wifi selection window, it will automatically connect to the default network it's supposed to. I just want to know why it's asking me every single time I log in.

seems that the card takes a few seconds to wake up after the iMac awakes from sleep. It eventually connects to the prefered network. But the dialog box continues to show up when the the MAC is waken up...

A tech company just set up a wifi network in my house and does not use my existing TC; how do I get it in the network to serve as backup for my iMac? (I don't need it as a wifi access point anymore)

a tech company just set up a wifi network in my house and does not use my existing TC; how do I get it in the network to serve as backup for my iMac? (I don't need it as a wifi access point anymore) thanks

Just bridge the TC and plug it by ethernet into the main router.
Bridge in v5 airport utility.
In v6 it is under network.. change it from DHCP and NAT to Off bridge mode.
Turn off the wireless.

Wifi 'Network Failed' ??? IMac 10.7.5

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