MacBook won't connect to wifi but iPhones will?

Help! My MacBook will not connect to wifi at home. All other devices do, but none of the MacBooks. Weird, right? I've tried every fix I could find in these forums and nothing works. Diagnostic test says network is working fine...

i sometimes run to these issues when i have my nieces and nephews visiting me and a lot of devices trying to connect to the same router - some will connect and others won't.
I solved my issue by getting into my router's settings and changing the channel - under the wireless section.
I also changed all my macbooks dns settings to the image below.
give that one a go and see if that helps you out.

Similar Messages

My macbook pro is connected to wifi but it will not connect to the internet.

My macbook pro is connected to wifi but it will not connect to the internet. When I go on safari, it says that "Safari can't verify the identity of the website". Then I tried to update flashplayer but you need the internet to update it. All this only started happening after that Moutain Lion software was downloaded onto the laptop. Please help, I have been internet-less for a couple months now.

Hi rynhelp,
If you are not able to connect to the internet after installing Mountain Lion, see this article for information on how to start troubleshooting:
OS X Mountain Lion: Use Network Diagnostics
http://support.apple.com/kb/PH10984
You may find additional troubleshooting information in this article useful:
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
http://support.apple.com/kb/HT4628
It is written for Lion but works for Mountain Lion as well.
Cheers,
- Ari

HT4628 Macbook won't connect to wifi, but will connect to mobile iphone, any solutions?

Long story short, I downladed an illegal file on my computer, and my internet provider cut me off. They made me connect an ethernet cable to the modem to go online and sign a I will not ever do again ordeal. Ever since then though, my computer will not connect with its wifi. My mobile iphone would connect easily and internet is fine. Just with my Macbook it won't connect. I brought the laptop to work and it would connect with other wifi networks easily, just not the one at home. any solutions?

Ever since then though, my computer will not connect with its wifi.
Is its your ISP wifi? If so, have you tried others (hot spots)?
Find Free Hotspots

My MacBook Pro cannot connect to wifi but iPhone can

My 2012 MacBook Pro won't connect to my wifi. My iPhone connects just fine, and my MacBook can connect perfectly to other wifi channels, just not mine. I have tried everything to get this to work! Can anyone help? It would be much appreciated!!

Solution may be found if you search in the "More Like This" section over in the right column and by doing a forum search. Your type of question is asked here just about every day.

My IPad won't connect to wifi but but the other devices will, My IPad won't connect to wifi but but the other devices will, My IPad won't connect to wifi but but the other devices will, My IPad won't connect to wifi but but the other devices will

Are iPad won't connect to wifi but are other devices can

Start here then. Ther are so many different things that you can try.
iOS: Troubleshooting WiFi and network connections
http://support.apple.com/kb/TS1398

Macbook Pro won't connect to wifi but other computers are working perfectly

Hi,
I have a 2012 MacBook Pro that connects to WiFi no problem anywhere else - except for my parent's house (who I am currently visiting). There are 2 other PCs in the house that connect to the WiFi without a problem, as does my iPhone. When I try to connect, the Network Setup Assistant keeps saying "Connection Timeout" and then when I go into "Assist Me" the error comes up as "The password you entered is invalid." I know that the password is correct, but I can't get passed this step...tried restarting computer and router but no luck.
Help!!

Click the Advanced button in the Network preference pane, then the TCP/IP tab. Type something (anything, as long as it's unique) in the DHCP Client ID text box. Click OK, then Apply. Reopen the TCP/IP tab and click Renew DHCP lease.

TS1398 New IPad mini won't connect to wifi but other technical divices can, HELP!!

I just bought a new ipad mini and tried to connect it to BT business hub but I waited more than I need to so I turned it off and restared again and i tried 3 times and tried all the ways to connect to wifi on the internet but it still wouldn't connect I need help T-T

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

My Ipod won't connect to Facebook, but it will log onto Skype

For some reason, my Ipod touch won't get on Facebook, but it will operate Skype just fine. Also, it will send me messages when I am offline as well, from Facebook Messenger, and the games that I play. I have tried resetting the internet connection, but it's still the same thing. And I have checked it for updates as well. Can anyone help me?

What is "it" in "Also, it will send me messages when I am offline as well, from Facebook Messenger, and the games that I play."
The iPod can send or receive message without an internet connection.
What iOS version on the iPod?
Have yo went to FB's support site?'Have you tried when connected to another network? Maybe the network is blocking FB

My iphone 4s won't connect to wifi but other people's do

I have a new iphone 4S and it won't connect to the wi fi at our home. Other people in my family have iphones or nexus and they all will connect.
I enter the password and the wireless symbol appears for a second but then it says unable to connect.
I have no trouble connecting to other wifis in other locations.
Thanks in advance, it is getting very frustrating.!!!

Just had this same problem I went to the apple store today and they told me my wifi card was out and then gave me a new phone but I backed it up and it's not working again so they said one of my apps might have a virus that is interfering with my wifi so it's back to apple again tomorrow They said they will give me another new phone but I will have to set it up as new and will probably lose everything except the contacts that I have backed up so if I were you I would back up your pics and everything else in iCloud

IPad mini won't connect to wifi, but does connect to iPhone hotspot.

I have a 1st gen iPad mini. It suddenly didn't connect to any of my known networks (House, work, parents). It does see the wifi signal but does not connect. I did a reset to all network settings, and it only connects to my iPhone hotspot but when I try to put the password for all the other wifi networks it gives me a message that the password is incorrect, which I'm sure is not right because I tried it on the other devices. I made a full restore to factory settings so it's runing iOS 8.1, it is like new, but still the same problem.

Hi Maybe it's a hardware problem or a modem problem. I think you need to take to Apple Store they may exchange but you will have to pay part of the cost if over 1 year old. Cheers Brian

IPod won't connect to wifi but the wifi is fine

My computer's wifi is fine but both mine and my sisters iPods won't connect to the wifi. What's wrong with my iPod?

Does the iPod connect to other networks?
Does the iPod see the network?
Any error messages?
Do other devices now connect?
Did the iPod connect before?
Try the following to rule out a software problem:
- 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
- Wi-Fi: Unable to connect to an 802.11n Wi-Fi network
- 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.
If still problem make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.
Apple Retail Store - Genius Bar

Admin user account won't connect to internet - but guest will.

I'm having a very strange problem with my imac. When I am signed in using my normal admin account, the internet won't work. Or if it does it is brutally slow. And as long as I have the my computer plugged into the internet... whether it be ethernet or wifi, no one else in my house can connect to the internet either, or it's brutally slow as well. The second I unplug the ethernet cable from the back of my computer, everyone else's computer on my home network works perfectly.
The only way I can avoid this problem is to sign on to my imac with the guest account, in which case the internet works fine on my computer and everyone else's. Does anyone know how to fix this? I really don't want to just start using the guest account... I am a photographer and all my info, apps, etc. I use for my business are in my normal admin account. Any help will be much appreciated. Thanks, Beverly
I am running Lion 10.8.5

This procedure is a diagnostic test. It changes nothing, for better or worse, and therefore will not, in itself, solve your problem.
If you don't already have a current backup, back up all data before doing anything else. The backup is necessary on general principle, not because of anything in the test procedure. There are ways to back up a computer that isn't fully functional. Ask if you need guidance.
Below are instructions to run a UNIX shell script, a type of program. All it does is to gather information about the state of your computer. That information goes nowhere unless you choose to share it on this page. However, you should be cautious about running a program at the instance of a stranger on a public message board. If you have doubts, search this site for other discussions in which this procedure has been followed without any report of ill effects. If you can't satisfy yourself that the instructions are safe, don't follow them.
Here's a summary of what you need to do: Copy a line of text from this web page into the window of another application. Wait about a minute. Then paste some other text, which will have been copied automatically, back into a reply on this page. The sequence is: copy, paste, wait, paste again. Details follow.
You may have started the computer in "safe" mode. Preferably, these steps should be taken in “normal” mode. If the system is now in safe mode and works well enough in normal mode to run the test, restart as usual. If you can only test in safe mode, do that.
If you have more than one user, and the one affected by the problem is not an administrator, then please run the test twice: once while logged in as the affected user, and once as an administrator. The results may be different. The user that is created automatically on a new computer when you start it for the first time is an administrator. If you can't log in as an administrator, test as the affected user. Most personal Macs have only one user, and in that case this paragraph doesn’t apply.
The script is a single long line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, though you may not see all of it in your browser, and you can then copy it. If you try to select the line by dragging across the part you can see, you won't get all of it.
Triple-click anywhere in the line of text below on this page to select it:
clear; shopt -s extglob; Fb='%s\n\t(%s)\n'; Fm='\n%s:\n\n%s\n'; Fs='\n%s: %s\n'; Fu='user %s%%, system %s%%'; PB="/usr/libexec/PlistBuddy -c Print"; A () { [[ a -eq 0 ]]; }; R () { o=; [[ r -eq 0 ]]; }; Pm () { [[ "$o" ]] && o=`sed 's/^ */ /' <<< "$o"` && printf "$Fm" "$1" "$o"; }; Pc () { o=`egrep -v '^[[:blank:]]*($|#)' "$2"`; Pm "$1"; }; Pp () { o=`$PB "$2" | awk -F'= ' \/$3'/{print $2}'`; Pm "$1"; }; Ps () { o="${o##+( )}"; [[ ! "$o" =~ ^0?$ ]] && printf "$Fs" "$1" "$o"; }; id | grep -qw '80(admin)'; a=$?; A && sudo true; r=$?; t=`date +%s`; clear; { A || echo $'No admin access\n'; A && ! R && echo $'No root access\n'; system_profiler SPSoftwareDataType | sed '8!d;s/^ *//'; o=`system_profiler SPDiagnosticsDataType | sed '5,6!d'`; [[ "$o" =~ Pass ]] || Pm "POST"; o=`pmset -g therm | sed 's/^.*CP/CP/'`; egrep -q 'No th|pms' <<< "$o" && o=; Pm "Thermal conditions"; o=`pmset -g sysload | grep -v :`; grep -q '= [^GO]' <<< "$o" || o=; Pm "System load advisory"; o=`nvram boot-args | awk '{$1=""; print}'`; Ps "boot-args"; d=(/ ""); D=(System User); for i in 0 1; do o=`cd ${d[$i]}L*/L*/Dia* && ls *.{crash,hang,panic} | tail | awk -F_ '{$NF=a[split($NF,a,".")]; print}'`; Pm "${D[$i]} diagnostics"; done; o=`syslog -F bsd -k Sender kernel -k Message CReq 'GPU |hfs: Ru|I/O e|n Cause: -|NVDA\(|pagin|SATA W|ssert|timed? ?o' | tail -n25 | awk '/:/{$4=""; $5=""; print}'`; Pm "Kernel messages"; o=`df -m / | awk 'NR==2 {print $4}'`; [[ o -lt 5120 ]] && Ps "Free space (MiB)"; o=$(($(vm_stat | awk '/eo/{sub("\\.",""); print $2}')/256)); o=$((o>=1024?o:0)); Ps "Pageouts (MiB)"; s=( `sar -u 1 10 | sed '$!d'` ); [[ s[4] -lt 90 ]] && o=`printf "$Fu" ${s[1]} ${s[3]}` || o=; Ps "Total CPU usage" && { s=(`ps acrx -o comm,ruid,%cpu | sed '2!d'`); o=${s[2]}%; Ps "CPU usage by process \"$s\" with UID ${s[1]}"; }; s=(`top -R -l1 -n1 -o prt -stats command,uid,prt | sed '$!d'`); s[2]=${s[2]%[+-]}; o=$((s[2]>=25000?s[2]:0)); Ps "Mach ports used by process \"$s\" with UID ${s[1]}"; o=`kextstat -kl | grep -v com\\.apple | cut -c53- | cut -d\< -f1`; Pm "Loaded extrinsic kernel extensions"; R && o=`sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix\.cron)|org\.(amav|apac|calendarse|cups|dove|isc|ntp|post[fg]|x)/{print $3}'`; Pm "Extrinsic system jobs"; o=`launchctl list | sed 1d | awk '!/0x|com\.apple|org\.(x|openbsd)|\.[0-9]+$/{print $3}'`; Pm "Extrinsic agents"; for d in {/,}L*/{La,Priv,Sta}*; do o=`ls -A "$d" | egrep -v '^(\.DS_Store$|com\.apple\.)'`; Pm "$d"; done; o=`find -L /S*/L*/E* {/,}L*/{A*d,Compon,Ex,In,Keyb,Mail,P*P,Qu,Scripti,Servi,Spo}* -type d -name Contents -prune | while read d; do ID=$($PB\ :CFBundleIdentifier "$d/Info.plist") || ID="No bundle ID"; egrep -qv "^com\.apple\.[^x]|Accusys|ArcMSR|ATTO|HDPro|HighPoint|driver\.stex|hp-fax|\.hpio|JMicron|microsoft\.MDI|print|SoftRAID" <<< $ID && printf "$Fb" "${d%/Contents}" "$ID"; done`; Pm "Extrinsic loadable bundles"; o=`find /u*/{,*/}lib -type f -exec sh -c 'file -b "$1" | grep -qw shared && ! codesign -v "$1"' {} {} \; -print`; Pm "Unsigned shared libraries"; o=`launchctl getenv DYLD_INSERT_LIBRARIES`; Pm "Inserted libraries"; o=`find {,/u*/lo*}/e*/periodic -type f -mtime -10d`; Pm "Modified periodic scripts"; o=`scutil --proxy | grep Prox`; Pm "Proxies"; o=`scutil --dns | awk '/r\[0\] /{if ($NF !~ /^1(0|72\.(1[6-9]|2[0-9]|3[0-1])|92\.168)\./) print $NF; exit}'`; Ps "DNS"; R && o=`sudo profiles -P | grep :`; Pm "Profiles"; for f in fstab sysctl.conf crontab launchd.conf; do Pc $f /etc/$f; done; Pc "hosts" <(grep -v 'host *$' /etc/hosts); Pc "User launchd" ~/.launchd; R && Pc "Root crontab" <(sudo crontab -l); Pc "User crontab" <(crontab -l); R && o=`sudo defaults read com.apple.loginwindow LoginHook`; Pm "Login hook"; Pp "Global login items" /L*/P*/loginw* Path; Pp "User login items" L*/P*/*loginit* Name; Pp "Safari extensions" L*/Saf*/*/E*.plist Bundle | sed 's/\..*$//;s/-[1-9]$//'; o=`find ~ $TMPDIR.. $ -flags +sappnd,schg,uappnd,uchg -o ! -user $UID -o ! -perm -600 $ | wc -l`; Ps "Restricted user files"; cd; o=`system_profiler SPFontsDataType | egrep "Valid: N|Duplicate: Y" | wc -l`; Ps "Font problems"; o=`find L*/{Con,Pref}* -type f ! -size 0 -name *.plist ! -exec sh -c 'plutil -s "$1" >&-' {} {} \; -print`; Pm "Bad plists"; d=(Desktop L*/Keyc*); n=(20 7); for i in 0 1; do o=`find "${d[$i]}" -type f -maxdepth 1 | wc -l`; o=$((o<=n[$i]?0:o)); Ps "${d[$i]##*/} files"; done; o=$((`date +%s`-t)); Ps "Elapsed time (s)"; } 2>/dev/null | pbcopy; exit 2>&-
Copy the selected text to the Clipboard by pressing the key combination command-C.
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
When you launch Terminal, a text window will open with a line already in it, ending either in a dollar sign ($) or a percent sign (%). If you get the percent sign, enter “sh” and press return. You should then get a new line ending in a dollar sign.
Click anywhere in the Terminal window and paste (command-V). The text you pasted should vanish immediately. If it doesn't, press the return key.
If you're logged in as an administrator, you'll be prompted for your login password. Nothing will be displayed when you type it. You will not see the usual dots in place of typed characters. Make sure caps lock is off. Type carefully and then press return. You may get a one-time warning to be careful. If you make three failed attempts to enter the password, the test will run anyway, but it will produce less information. In most cases, the difference is not important.
If you're not logged in as an administrator, you won't be prompted for your password. The test will still run. It just won't do anything that requires administrator rights.
The test may take up to a few minutes to run, depending on how many files you have and the speed of the computer. A computer that's abnormally slow may take longer to run the test. There is no indication of progress until it's done. Wait for the line "[Process completed]" to appear in the Terminal window. If you don't see that line within half an hour or so, the test probably won't complete in a reasonable time. In that case, close the Terminal window and report your results. No harm will be done.
When the test is complete, quit Terminal. The results will have been copied to the Clipboard automatically. They are not shown in the Terminal window. Please don't copy anything from there. All you have to do is start a reply to this comment and then paste by pressing command-V again.
If any private information, such as your name or email address, appears in the results, anonymize it before posting. Usually that won't be necessary.
When you post the results, you might see the message, "You have included content in your post that is not permitted." That's because the forum software falsely identifies something in the post as a violation of the terms of use. If that happens, please post the results on Pastebin, then post a link here to the page you created.
Note: This is a public forum, and others may give you advice based on the results of the test. They speak only for themselves, and I don't necessarily agree with them.
Copyright © 2014 Linc Davis. As the sole author of this work, I reserve all rights to it except as provided in the Terms of Use of Apple Support Communities ("ASC"). Readers of ASC may copy it for their own personal use. Neither the whole nor any part may be redistributed.

Firefox won't connect to internet but IE will!!

I'm using latest edition of Firefox on windows 07 laptop. Two days ago my internet connection slowed significantly (i was only one) for few hours but then things got to normal. My computer updated (windows) last night and when tried to turn on firefox it won't connect or load website pages. First it said errror in my connection, now message says 'the connection has timed out'. I have done everything stated on firefox support (checked proxy - am on college network so it was on auto and I switched it to no proxy - no luck), I checked my firewall (managed by mcafee) and even though windows is not being used on my laptop I added firefox just in case - no luck. I did the other steps on the page - no luck. IE is working fine and at reasonable speed so it's not the connection.
Any help would be greatly appreciated!!
Edit: don't know if this may help but googlechrome won't work for me either - it opens, and tries to connect to page but never does. . .

[[https://support.mozilla.com/en-US/kb/Cannot%20connect%20after%20upgrading%20Firefox?s=cannot+connect+after+upgrading+firefox&as=s]]
For me the problem was McAfee Security Center running on Windows 7. I reset McAfee and Firefox connected again.

My 2009 MacBook won't connect to wifi anywhere

A few hours ago it was working fine, I took it to Uni so turned it off, the next time I turned it on at home the wifi refuses to work and airport had turned itself off. I've tried forgetting all know networks and setting it up as new but I keep getting "connection timeout" or "password invalid"

you need to open the keychain access located in your utilities folder in the applications and once in the keychain on the left side click on the words system at the top and in the lower section click on passwords
next look in the striped area for any passwords that say airport network password next to kind and highlight those and hit delete on the keyboard to remove them from the keychain.
once you remove all of these airport passwords, quit the keychain
turn wifi off then back on, select your wifi network from the list and enter the password telling it to save to keychain this should resolve your issue!

When I restart computer it won't connect to wifi but never has problems otherwise

I have no wifi problems. However, when I shut down the computer and start it or restart it, it searches for wifi and then times out. I have to click on the wifi symbol, turn wifi off then back on and it immediately connects successfully. The only issue is on restart.

Try here:
iOS: Device not recognized in iTunes for Windows

MacBook won't connect to wifi but iPhones will?

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