MacBook Pro 10.8.4 Wi-fi Issues (won't connect to any secure networks)

Hi all,

I have a rather strange issue I am hoping somebody can help me with. I am a tech guy so please feel free to get technical on me( I just am not an expert on Macs).

I have a MacBook Pro, purchased in early 2011 according to a serial number warranty check. Warranty has expired and I have no Applecare.


The machine was shut down last night as it normally would be(machine belongs to a family member). The next day, it was booted up and would simply not connect to any wi-fi networks, let alone even find them. The wi-fi adapter itself seemed to be stuck "off". Clicking Turn On did nothing.

I went ahead and did a PRAM reset. No luck
I then "inactivated" the wi-fi connection, removed it, re-added it, restarted. Half Luck.

Now my wi-fi turns on and will actually see networks, but here is the kicker:

It only connects to Non-secure networks (there is a non secure Linksys network in my area and I am able to connect and go online with it).

I have my home wireless (linksys router) on WPA2, and when I try to connect, it says "mac wifi could not join [wifi name].  a connection timeout occurred". Yes I am putting in the right key, I even changed the key to test, no luck.

I tried the same thing at my office, no luck, still says same issue, Cisco E1000 WPA2.

I have removed all the networks from the Preferred list, still no luck.
There is no filtering on any of the wireless routers, other laptops/phones/tablets connect fine.

Any advice? How come my Mac will only connect to non-secure networks?

TIA.
LVL 1
SpejAsked:
Who is Participating?
 
SpejConnect With a Mentor Author Commented:
The Airport inside the laptop was the culprit. Ended up purchasing a replacement for $27, and watched a Youtube video on the replacement. Took about 4 hours of work, saved myself a boatload of cash. Thanks for the help all.
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strungCommented:
Try this:


1. Open system Preferences->Network pane, highlight the Wi-fi airport card and in the right hand pane turn OFF the airport signal. Then quit System Preferences.

2. Navigate to the folder /YourHardDrive/Library/SystemConfiguration/ and find the file: com.apple.airport.preferences.plist and drag to the Trash can (but don't Empty the Trashcan just yet.

3. Immediately Reboot to rebuild that file in the /SystemConfiguration/Preferences/ file.

4. Upon the reboot go back into System Preferences->Network pane and add you wireless card back and rejoin your network. In the right hand pane mark sure you push the 'Apply' button tom save.
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Scott Fell, EE MVEDeveloper & EE ModeratorCommented:
When I made the switch to mac, I was used to getting into gritty details on the pc.  That thinking does not always work well on the mac.

Option 1) System Preferences > Network > select on WiFI, on lower left, try removing, then adding back.


Option 2) System Preferences > Network > select on WiFI click "Assist Me" button and it will probably find the answer
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SpejAuthor Commented:
strung,

In my Library Folder, I do not see a "system configuration folder." Also a search for "com.apple.airport.preferences.plist" returned back no results.
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SpejAuthor Commented:
padas,

The "assist me" button only shows up when I connect to that unsecured "linksys" network.

When i ran Assist Me, It did not help. It said either network password wrong, network name wrong, or base is out of range.

No luck here.
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strungCommented:
Do the secured networks show up in "join other network" (you may have to wait a minute or two) or are you entering the SSID manually?

Also, (dumb question) did you check to make sure CapsLock is off?
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strungCommented:
Also, try opening KeyChainAccess and delete the entries for wireless networks.
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SpejAuthor Commented:
strung,

The networks show up fine in my list, secured and non secured.

I tried entering the SSID and WPA2 key manually, same problem, "connection failed"

Caps locks is indeed disabled.
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strungCommented:
Try deleting the items in the keychain.

Also when entering the password, click on "show password" to make sure you are entering it correctly and that your keyboard mapping hasn't changed.
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SpejAuthor Commented:
I am certain this is not an issue with the password, as I have gone into my router and changed the keys to match.

Also, even when I just enter random characters in the password field, it immediately throws same error.
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strungCommented:
Just for the heck of it, try temporarily using a really short WPA2 passphrase:

1234

and see what happens.

Also, have you deleted the Keychain entries?

You could also try making a new location in the Network prefs.
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Scott Fell, EE MVEDeveloper & EE ModeratorCommented:
Are you on the latest version of the current os?  Click the apple icon and Software Update.

Sometimes that seems to magically fix things.
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SpejAuthor Commented:
strung,

WPA2 minimum is 8 characters, I tried 12345678 and still no luck.

I deleted Keychain entries, no luck.

I made a new network location, no luck.


padas,

I am on the latest version OS.
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strungCommented:
See if there is anything in the console logs that might give more details as to the error.

You could also check the logs on your router.
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Scott Fell, EE MVEDeveloper & EE ModeratorCommented:
What happens if you create a non secure connection on your network?  Are you sure it is a secure vs non secure thing and not dumb luck that it happend to connect to the network that is not yours?

Did the mac's local IP get reset when restarted and the router only accepts specific local IP?

Is the router broadcasting the ssid?
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strungCommented:
Pull down the Wireless menu while holding down the option key and choose Wireless Diagnostics.
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SpejAuthor Commented:
strung,

Nothing that helps in the logs on the router.

In the mac console logs, all I see are "wlEvent: en1 en1 link DOWN" when I try to connect to my secured office wireless network.

padas,

I removed the WPA2 security on my office wireless and the Mac connected to it fine and went online. So it definitely has something to do with connecting to Wireless networks that are secured with WEP/WPA2.

I also did a software update, took about a half hour but it finished, no luck still.

This is rather bizarre and frustrating.
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SpejAuthor Commented:
Interesting link I found, software updates cause Airport problems. Hope my Macbook wasn't a victim(however that link is 5 years old)?

http://discussions.apple.com/thread.jspa?threadID=883021&start=0&tstart=0
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Scott Fell, EE MVEDeveloper & EE ModeratorCommented:
Try the software update again....just incase there is another
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SpejAuthor Commented:
Checked again, no updates available, all new are installed.

I am searching the Internet, and people are saying 2011 Macbook Pro's have bad wlan hardware. This is quite frustrating.

Is there a USB wi-fi card that can work with this laptop?
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SpejAuthor Commented:
Another link I found:
https://discussions.apple.com/thread/2767037?start=0&tstart=0

Says WPA2 passwords with special characters will not work.

Our wireless password is:
123456890!

I tried with WPA2, no luck.
Tried with WPA2 and pw 1234567890, no luck.
Tried with WPA and pw 1234567890, no luck.
Tried with WPA with pw 1234567890!, no luck.
Tried WEP with 1234567890, no luck.

Tried with NO SECURITY on this wi-fi network, connected right away.


Seems like Apple bug to me, even though I have tried with a Netgear, Cisco/Linksys, D-Link router and even tried thethering to a Samsung Galaxy Note 2 and iPhone 5, all same problem.

Help!
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strungCommented:
You shoulldn't be having these problems. Have alook at the console logs and router logs as I suggested to see if you can get  a more detailed error message as to where the connection is breaking down. Also run the wifi diagnostic report as I suggested.
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strungCommented:
Have you tried rebooting your router?
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SpejAuthor Commented:
strung,

Of course I shouldn't be having these problems, it seems like no one can answer my question so far, perhaps its a bug. I have checked router and console logs, however whenever a "connection fails" on the Mac it does not spit out a specific error message that gives me an error code or anything. So I have no reference point or place to start.

I have rebooted my router at home, office, and at neighbors with no luck. Many, many times.

Again, it connects to non secure networks but fails as soon as it tries WPA/WPA2.

Help.
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strungCommented:
Any luck with the Wifi Diagnostic Report?
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strungCommented:
Incidentally, my computer is also an early 2011 MacBook Pro running 10.8.4 and I have no problems connecting to WPA2, so it would not seem to be a generic problem.

Try creating an new Admin user in the Users and Groups prefs panel, then log in as the new user and see if the problem persists.
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SpejAuthor Commented:
strung,

I have the Wi-fi diagnostic report on my desktop, what do you need from it?
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SpejAuthor Commented:
strung,

I just tried a new Admin user and tried connecting, same exact issue unfortunately.
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SpejAuthor Commented:
I should add that wired ethernet connection works fine no problems.
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strungCommented:
Let's have a look at the following:

wireless diagnostics log
wifi.log
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strungCommented:
My earlier post about deleting the airport prefs plist was in error about the location. Try the following instead:

1. Open system Preferences->Network pane, highlight the Wi-fi airport card and in the right hand pane turn OFF the airport signal. Then quit System Preferences.

2. Navigate to the folder /YourHardDrive/Library/Preferences/SystemConfiguration/ and find the file: com.apple.airport.preferences.plist and drag to the Trash can (but don't Empty the Trashcan just yet.

3. Immediately Reboot to rebuild that file in the /SystemConfiguration/Preferences/ file.

4. Upon the reboot go back into System Preferences->Network pane and add you wireless card back and rejoin your network. In the right hand pane mark sure you push the 'Apply' button tom save.
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strungCommented:
At the same time delete the following files from the same folder:

preferences.plist
com.apple.network.identification.plist
NetworkInterfaces.plist
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SpejAuthor Commented:
strung,

Tried your steps above, twice, no luck, same issue persists.

Also I will post up those diagnostic files.
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strungCommented:
This is very puzzling.
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strungCommented:
Try booting from the recovery partition by booting while holding down Command-R. See if you can connect to your wireless network while booted from the recovery partition.

Since you will be using entirely separate software, this should tell you whether your problem is hardware or software. If you can connect from the recovery partition, your problem is software. If not, it is hardware.
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SpejAuthor Commented:
strung,

Surprisingly, when booted from recovery partition, the machine connects to the secured WPA2 network just fine. Definitely a software issue.

o_O

thoughts?
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strungCommented:
That is good news. At least we know it is not a hardware problem.

Bedtime for me, though.

Here are a few Hail Marys to try:

1. Download Onyx http://www.titanium.free.fr/downloadonyx.php and use it to clear all your caches.
2. Clear your PRAM by cold booting while holding down the command-option-p-r key combination until you hear the startup chime a third time.
3. Use Disk Utility to Repair Permissions.

http://osxdaily.com/2012/11/30/resolving-stubborn-wi-fi-connection-problems-in-mac-os-x/
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SpejAuthor Commented:
strung,

Tried those in your list, still no luck, I appreciate the help, I will keep hunting.
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strungCommented:
Is there any possibility that you have non-standard keyboard mapping and the computer is not  typing what you think it is typing into the password box? Do you have the keyboard set to the standard US keyboard?
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strungCommented:
Do you have the Mac firewall turned off? No anti-virus or security software?
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strungCommented:
Try downloading and running the 10.8.4 combo updater:

http://support.apple.com/kb/DL1659
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strungCommented:
In your network settings make sure you don't have any boxes ticked under the Proxies tab.
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SpejAuthor Commented:
strung,

The keyboard is indeed US based.

We tried with Mac firewall on and off, no luck.
We tried with Sophos AV and did a scan, no luck.
Removed Sophos, rebooted, no luck.

There are no boxes ticked under Proxies.

I will try the Combo updater this afternoon. At this point, it seems like Mac OSX reinstall is the easier solution.
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Scott Fell, EE MVEDeveloper & EE ModeratorCommented:
There is a good chance they user has apple care, before you do a reinstall, that may be a good last resort.  Even if they don't have apple care, nicely and briefly explain the issue and yo have already tried everything.  Sometimes, they will still give you a little help.
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Jackie ManCommented:
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SpejAuthor Commented:
jackeiman,

I will check this and reply back shortly.

thanks.
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Jackie ManCommented:
Glad to know you have solved the problem. Cheers!
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Scott Fell, EE MVEDeveloper & EE ModeratorCommented:
Did the airport allow you to get internet at all?
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Scott Fell, EE MVEDeveloper & EE ModeratorCommented:
What was the fix?
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strungCommented:
Read the author's last comment about three messages above yours.
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SpejAuthor Commented:
I figured this out on my own.
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