Wifi doens't connect after upgrade to 10.7.5

I upgraded my imac to 10.7.5, and some how my wifi did not connect to the internet from yesterday. I tried network diagnostics for couple times, and there is one time the internet was on when the small window popup with the msn "some thing abt the network is ok" and then it disconnect again after a few sec. i tried to diagnos again but it still doesnt work. Then i reseted the router, and nothing changed.  Is there anyone can help me out.

Please take each of the following steps until the problem is resolved. With a desktop Mac, you may need to use a USB keyboard or mouse. You should always have one of each available as a spare.
Step 1
Follow the instructions on the applicable pages linked below:
How to set up your Apple Wireless Keyboard
How to set up your Apple Wireless Mouse or Magic Trackpad
Step 2
Reset the System Management Controller.
Step 3
Back up all data.
Triple-click anywhere in the line below on this page to select it:
/Library/Preferences/com.apple.Bluetooth.plist
Right-click or control-click the line and select 
Services ▹ Reveal
from the contextual menu.* A folder should open with an item selected. Move the selected item to the Trash. You may be prompted for your administrator login password. Reboot.
*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.

Similar Messages

  • Ipad wifi does not connect after upgrading firmware to 3.2.2

    So many posts and replies on connection to wifi with iPad not working... My issue is that everyhing worked perfect a home until i upgraded firmware to latest (3.2.2?). Now it connects and disconnects in second intervals ??!!
    no changes has been made to my router and my two macs connect as before, only iPad does not
    Very frustrating indeed, so any tips on what i should do?
    Cheers in advance

    krannisto wrote:
    So many posts and replies on connection to wifi with iPad not working...
    You may already have seen these suggestions, but in case you haven't:
    _Pad: Troubleshooting Wi-Fi networks and connections_
    ...from here:
    http://www.apple.com/support/ipad/wifi
    And every iPad comes with complimentary telephone technical support for 90 days:
    http://www.apple.com/support/contact/phone_contacts.html
    _iPad Service: Frequently Asked Questions_

  • WPA2-enterprise WIFI can't connect after upgrading to 6.1 or higher

    Hi. Please help.
    We have a campus wifi with two ssids: one open for everyone and one closed with wpa2-enterprise (PEAP) security for staff. All iphones and ipads works just fine on ios version 6.01 but they can't connect to secured wifi network after updating to ios ver 6.1 and higher (tried 6.1.2). They still able to connect to open wlan ssid. Our WIFI equipment is: Extremenetworks WM3600 controllers and AP4600/AP4511 access points running WM5.4.1. WMM enabled.
    WM3600 controller use Windows2008 r2 NPS server + active directory for authorization (selfsigned certificates is 2048 bit length).
    WM3600 wlan staff configuration settings:
    wlan Staff
    description TOGU staff network
    ssid STAFF
    vlan 238
    bridging-mode tunnel
    encryption-type tkip-ccmp
    authentication-type eap
    no answer-broadcast-probes
    protected-mgmt-frames optional
    radius vlan-assignment
    no motorola-extensions symbol-load-information
    use aaa-policy Domain_aaa
    Here is the log from iphone configuration utility with connection error:
    Feb 20 17:18:00  kernel[0] <Debug>: en0::IO80211Interface::postMessage bssid changed 
    Feb 20 17:18:00  Preferences[132] <Warning>: -[VPNConnectionStore reloadVPN]: The active VPN configuration has changed from  to (null)
    Feb 20 17:18:00  Preferences[132] <Warning>: -[VPNBundleController _vpnConfigurationChanged:] (0x1edbea10:<VPNBundleController: 0x1edbea10>): _serviceCount(0), serviceCount(0), toggleInRootMenu(0), RootMenuItem(1)
    Feb 20 17:18:00  wifid[14] <Error>: WiFi:[383033880.387575]: Failed to associate with STAFF: -3900
    Hope to get any help.

    Yes. We tried to reboot iphone(s), tried also with ipads 6.1. We tried to reset network settings.
    We tried to add wifi profile to clean new iphone using iphone configuration utility.
    Wireless supplier can't help - they told it is an ios issue and I think this is true because all
    ipads/iphones works just fine on  ios5 or 6.0.1 but can't connect on 6.1

  • HT204409 Having problem with wifi and Bluetooth connectivity after upgrading my iphone 5 to iOS 7.0.2

    Overheated while charging

    I am having the SAME problems on my 5s. I cant send picture texts to androids but I can to iphones. I have tried turning off/on wifi, resetting networks settings, re-added them as a contact, and turned off imessaging, and yes mms is enabled! Nothing works!!
    APPLE FIX THIS!!!!!!

  • I PHONE 4S WIFI NOT CONNECTING AFTER UPGRADING TO iOS7.1.1

    i PHONE 4S WIFI NOT CONNECTING AFTER UPGRADING TO iOS7.1.1

    Sorry to hear that.
    Do you have a technical support question?  If so, please don't hesitate to ask.  Also, please let us know the troubleshooting steps you've taken so far.

  • Problems with your internet connection after upgrading to iOS 7.1.2

    After upgrading to iOS 7.1.2 on my iPad Retina display does not connect to the internet more. Recognizes the Wi-Fi network but can not connect to the internet. The same thing happened to my wife's iPhone 5s, while my had no problems ...

    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 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

  • MacBook Pro drops Wi-Fi connection after upgrading to 10.6.5. Fixed!

    MacBook Pro drops Wi-Fi connection after upgrading to 10.6.5. Airport says no IP is detected then suddenly reconnects?
    This has been a problem I’ve been troubleshooting for the last month. I’m new to the Mac family and have loved my experience up until this point. I was under the impression that mac’s are supposed to be so user friendly that even your grandmother could use one with out having any technical knowledge. I mean I shouldn’t have to be deleting drivers or reformat my mac because of an OS update glitch? (That’s what the guy at the Genius Bar told me to do.) What I refused to succumb to was that I’m really good with computers. I get at least a phone call every other week from someone asking me for tech support. So I’d like to think that nothing I’ve done to the system would have caused this anomaly.
    After numerous attempts of troubleshooting and researching forms I believe I’ve discovered a solutions that seems to be working for me.
    Here are the steps I took to create a consistent connection to my Wi-Fi. I believe it was a combination of all these steps to create success.
    1.) Changed my router to use G Wireless Only. (I’m assuming this removed any unnecessary frequencies to allow G to broadcast stronger?)
    2.) Did a scan on the other networks in my area to find out what channel everyone else was broadcasting on. Copy and past the text below into a terminal window.
    sudo ln -s /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resourc es/airport /usr/sbin/airport
    This will allow you to simply type “airport” in the terminal window to execute the command.
    Type airport –s
    This will display all the networks in your area and what channel they are broadcasting on.
    3.) Changed my router to use a channel that no one in my area was using. (This helped to make my network stronger and free of interference.)
    The last steps will help your home network improve but these next steps I believe helped fix any install errors caused maybe by the 10.6.5 update on my mac.
    4.) Boot your Mac into safe mode by holding down the shift key while booting.
    5.) Open System Preferences and Click on Network.
    6.) Click the drop down menu from Locations at the top of the screen. Click edit locations..
    7.) Create a new location by clicking the + and give it a new name.
    8.) Delete the old location by clicking on the old locations name and click the – to remove.
    9.) Reboot
    10.) Open System Preference and click on Network.
    11.) Click on the settings sprocket next to the + and – and click on Set Service Order…
    12.) Drag Airport to the top of the list of devices then click Ok.
    Now this last step is what seemed to eliminate the issue. I hardcoded my IP address to my network. This way my computer will always use the same IP and not have to search.
    13.) Click on Advanced under Network.
    14.) Click on TCP/IP. Click on the drop down for Configure IPv4 and change it to Manually.
    15.) Fill out the fields with your IPv4 Address: 192.168.1.1xx (x=whatever number) Subnet Mask: 255.255.255.0 Router: 192.168.1.1 (All of these settings are pretty standard for most home networks.)
    16.) Click on the drop down for Configure IPv6 and change it to Off.
    17.) Next click on the DNS tab at the top.
    18.) Click the + to add a DNS Record.
    To find your DNS Server open a Terminal window by launching Applications --> Utilities --> Terminal
    Then Type cat /etc/resolv.conf
    (There is a space between cat and /. Without it you’ll get no such file or directory.)
    This should return two addresses. Your ISP’s DNS Servers.
    19.) Add both records to the DNS and click Ok.
    20.) Click Ok then under Network Click Ok.
    21.) Reboot router then Mac
    22.) Fixed my connection issue
    The symptoms I experienced eluded me to believe that something with the DHCP is going into an idle then disconnecting. Before when DHCP was set to automatically assign the network signal would time out then searchers for a new IP resulting in Airport displaying No IP is detected. By setting my IP to a fixed address I still notice a slight drop in bandwidth at moments but because of the assigned IP I never loose connection. I can now stream video, play games, chat all without getting disconnected.
    I believe this fix will work for my home network but I also noticed this issue at work so for each location that I connect for the time being I’ll create each there own location and hardcode the IP address to that network. I’ve been reading that 10.6.6 is coming soon so maybe this will be resolved for good in the next update.
    Let me know if this helps or if you have any questions.
    Best of luck.
    Message was edited by: erockdabass
    Message was edited by: erockdabass

    I have been having the same issue for the last two weeks. No real indication as to why it ever began other than I had turned off my router and Airport Extreme Base Station off for a weekend while I was away from my place.
    iPad, iPhone, iPod Touch, all have no issues at all with my Airport Extreme Base Station. Can stay connected throughout my living room, bathroom, bedroom, no issues whatsoever.
    My 5 month old MacBook Pro 2.66 GHz Core i7 Airport is sometimes perfect, able to connect, DHCP, and browse without issue. Then, for no reason, I won't be able to join my wireless network, or when I can join, I can't pick up an IP address. And then it will connect, pick up and IP, and then it won't browse. No real rhyme or reason to when this will happen, or when it works.
    I thought that it was an issue with my MacBook Pro, but then my sister visited with her brand new MacBook Pro 2.26 Intel Core 2 Duo, and while a month ago she was able to connect, DHCP, and browse without issue, this weekend she had all of the same issues I was having.
    My XBOX 360 and MacBook Pro have absolutely no issues with the wired connection. Only my WAN seems to have this issue.
    Did you ever find anything more to this?

  • I cannot connect after upgrading Firefox. I work in corporate environment and cannot change security settings. Why this feature was not tested before upgrading to current version?

    I cannot connect to ANY web sites (for example, yahoo, google, etc.

    [https://support.mozilla.org/en-US/kb/Cannot%20connect%20after%20upgrading%20Firefox Cannot connect after upgrading Firefox]
    see also [https://support.mozilla.org/en-US/kb/Firewalls Firewalls]
    thank you
    Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

  • No wireless connections after upgrading to leopard!

    Lost all wireless connection after upgrading to 10.5 osx. Getting frustrated with the upgrade after spending two hours on the phone with apple tech and was told that it was a third party issue! Able to access wireless with security turned off, but once I set sec password (WAP) no connection. What is strange is that I can receive and send email but no browser. All other Mac's/PC's connect fine. Other mac's have not been upgrade! Does anyone have any answers???

    see my post here: http://discussions.apple.com/thread.jspa?threadID=1244216&tstart=0
    it might help you.

  • I am using iPhone 5C. My wifi is extremely slow after upgrade to ios8. Buffering online video and songs taking forever. What's going on?

    I am using iPhone 5C. My wifi is extremely slow after upgrade to ios8. Buffering online video and songs taking forever. What's going on?

    I have same problem. Reboot helps for a few minutes.

  • ISCSI initiator not connecting after upgradation

    HI,   
    iSCSI initiator not connecting after upgradation from windows 2003 STD to windows 2008 STD R2 server, upgradation was successfully completed, except Microsoft iSCSI initiator connectivity, the initiaor interface show it as 'reconnecting'....!!!!!
    Kindly guide on this.
    Thanks in Advance

    HI Shaon Shan,
    Thanks for the info.
    While searching for the file names start with iscsi in c:\windows\system32 folder the file version is 5.2.3790.3825 in working windows 2003  server.
    Recently I've downloaded (Not yet installed) iSCSI initiator for Windows 2008 from Microsoft website in that iSCSI initiator file version shown as 6.3.4.1, instead of using inbuilt Microsoft iSCSI initiator in W2K8, shall I try installing the downloaded
    version,
    because when I checked in Windows 2008 (Upgraded version) the iSCSI file version remains the same as 5.2.3790.3825 which was found in windows 2003.
    Post to our previous discussion
    While I'm trying to install the new iSCSI initiator for Windows 2008 downloaded from Microsoft website, it shows some error "Setupcould not find the update.inf file needed to update your system" then I've updated my server, but no luck still showing the
    same....!!!!

  • IOS 6 Facetime not connecting after upgrade in UAE It was before on an Ipad purchased in Uk, I am miserable, I know its the carrier Etisalat, I sincerely some one finds a fix for this.

    OS 6 Facetime not connecting after upgrade in UAE It was before on an Ipad purchased in Uk, I am miserable, I know its the carrier Etisalat, I sincerely some one finds a fix for this help.

    I attempted to uninstall QT and reinstall- the QT 7.4 installer failed to install (it said a more up to date version was present, even though I'd trashed the old one). I downloaded and reinstalled 7.5 but itunes still did not work.
    While my solution wasn't ideal
    1) It was what Apple told me to do!
    2) It seemed preferable to A) A complete system reinstall, B) removing 264 .plist files one at a time, rebooting, and seeing which one was causing the problem.
    I still have the old .plist files in another folder, and can replace them in my preferences folder if I decide I need them. Most apps will create a new .plist file on start-up if there is not one present, so unless it is a program where I have gone to great lengths to change preferences from default, I'm guessing I will not notice much difference (and if I do, I can always go to my archive of .plists, or on Time Machine for that matter...)

  • Firefox would not connect after upgrade. Did system restore (XP) and not firefox wont even start

    Firefox would not connect after upgrade from verion 6 to version 7. Did system restore (XP) and now firefox wont even start

    Sometimes Firefox will hang during startup or shutdown, and still be running invisibly in the background. Usually in that case, you need to "kill" it either by restarting Windows or using the Windows Task Manager. It sounds as though you are familiar with opening the Processes tab, finding firefox.exe, and using End Process.
    If you use an advanced firewall or other security software that tracks which programs are permitted to use the internet, please see these articles:
    * [[Fix problems connecting to websites after updating Firefox]]
    * [[Configure firewalls so that Firefox can access the Internet]]
    A couple of other suggestions:
    (1) Can you start Firefox in its Safe Mode? Hold down the Shift key when starting Firefox. You should get a two-button dialog. Click "Start in Safe Mode" (''not'' Reset). Any difference?
    (2) In case your regular software missed something that is interfering with Firefox, try the scanning and clean-up tools listed in this article: [[Troubleshoot Firefox issues caused by malware]]

  • Wifi no longer connecting after startup

    wifi no longer connecting after startup... so I have to connect manually... started after 10.7.3
    any ideas

    Which computer are you experiencing this on?
    There are several threads dealing with (mostly) iMacs + bluetooth keyboards/mice and issues with WiFi no longer automatically connecting. There seems to be some issue that 10.7.3 introduces with these series of macs.
    No Apple provided solutions yet, but several workarounds: 1) attach a network cable direclty from modem/router to mac; 2) use the power button instead of mouse/keyboard to wake up mouse; 3) use USB keyboard/mouse (not personally confirmed); use airport extreme/express as a bridge.
    Right now it's a waiting game until Apple provides another update. I do recommend going to Apple feeback: (http://www.apple.com/feedback/) and at least voicing your opinion. Calling AppleSupport will do the same, but they'll make you go through the same (likely useless) steps everyone else has done.
    Good luck!

  • Wifi problem of G560 after upgrading to windows 8.1

    Hi,
    I have a lenovo G560. After upgrading from windows 8 to windows 8.1, I cannot connect to wifi. I was wondering if someon else has the same problem.

    hi amardoukhi,
    Welcome to the Forums.
    Your issue might be similar to this thread. Try the solution that was posted to rollback to an older driver version.
    The solution was to:
    1. Open Device Manager (press WInkey+R > type devmgmt.msc)
    2. On the Device Manager, navigate to Network Adapters > right click on the wireless adapter and choose Update Driver Software
       - Link to picture
    3. On the Driver Update Window, choose Browse my computer for driver software >  Let me pick from a list of device drivers on my computer and choose the wireless card on the list.
       - Link to picture
       - Link to picture
       - Link to picture
    Regards
    Did someone help you today? Press the star on the left to thank them with a Kudo!
    If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
    Follow @LenovoForums on Twitter!

Maybe you are looking for