A connection timeout occurred

Go to: Apple > System Preferences > Network > click on the cog and select Set Service Order.

Then in the Service Order: pain, click hold and drag the Wi-Fi service to the top of the list and click OK.

Addtitionally, if you have an ethernet cable plugged into the ethernet port or anyother networking connections...? Try unplugging or disabling them, until you sort out the Wi-Fi issue.

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 wireless router.

Step 1

Turn Wi-Fi off and back on.

Step 2

Restart the router and the computer. Many problems are solved that way.

Step 3

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 4

Run the Network Diagnostics assistant.

Step 5

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

Step 6

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 7

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 8

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 9

Reset the System Management Controller (SMC).

What do you get when you click on Assist me... and then Diagnostics...

Ok. Walk this through with us.

You get a connection timeout on WHAT DEVICE? another ipad? another laptop? a mac laptop? an imac? a touch ipod? an android device? WHAT?

Does this make a difference? Yes it does. The device and the router have to be compatible on a number of fronts. Speed, encryption, and the frequency. you may get bars of strength showing, but you may not be on the same sheet of music when it comes to encryption, WPA1? WPA2? WEP?

If you are using the smaller Airport Express, that router device can only support 10 devices to make a connection.

So, what device are you trying to make a connection with and what router are you trying to connect to?

Deleting the saved keychain access password and restarting my MBP worked!