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Macbook pro retina can't access wifi

Hi

My macbook pro retina display can't access wifi network.

I hv tried to setup multiple times still can't access. It show "A connection timeout occurred".


OS X 10.8.4

MacBook Pro with Retina display

Posted on Jun 24, 2013 10:05 PM

Reply
15 replies

Jun 25, 2013 7:39 AM in response to psuthip

Take each of the following steps that you haven't already tried, until the problem is resolved. Some of these steps are only possible if you have control over the wrieless router.

Step 1

Restart the router. Many problems are solved that way.

Step 2

Change the name of the wireless network, if applicable, to eliminate any characters other than letters and digits. You do that on your router via its web page, if it's not an Apple device, or via AirPort Utility, if it is an Apple device.

Step 3


Run the Network Diagnostics assistant.


Step 4


In OS X 10.8.4 or later, run Wireless Diagnostics and fix the issues listed in the Summary, if any.


Step 5


Back up all data.

Launch the Keychain Access 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 Keychain Access in the icon grid.

Enter the name of your wireless network in the search box. You should have one or more "AirPort network password" items with that name. Make a note of the name and password, then delete all the items. Quit Keychain Access. Turn Wi-Fi off and then back on. Reconnect to the network.

Step 6

You may need to change other settings on the router. See the guidelines linked below:

Recommended settings for Wi-Fi routers and access points

Potential sources of interference

Step 7

Make a note of all your settings for Wi-Fi in the Network preference pane, then delete the connection from the connection list and recreate it with the same settings. You do this by clicking the plus-sign icon below the connection list, and selecting Wi-Fi as the interface in the sheet that opens. Select Join other network from the Network Name menu, then select your network. Enter the password when prompted and save it in the keychain.

Step 8

Reset the System Management Controller (SMC).

Jun 26, 2013 1:10 PM in response to psuthip

Boot into Recovery mode. From the OS X Utilities screen, select Get Help Online. A clean copy of Safari will launch. No plugins, such as Flash, will be available. While in Recovery, you'll have no access to your saved bookmarks or passwords, so make a note of those before you begin, if they're needed for the test.


Test. After testing, reboot as usual and post the results.

Jul 21, 2014 2:26 AM in response to Linc Davis

Here's what solved the problem for me:


I went into my router settings and changed the SSID for the 5GHz band (the one that wasn't working).


It came up right away. Then I changed it back to the original name, because I like the name, and so that I wouldn't have to change all my other devices, none of which had any trouble on either band. It still worked.


Hope that works for others. For the record, I'd already tried safe boot and recovery mode without any joy.

Macbook pro retina can't access wifi

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