Put the adapter further away from your MacBook Air. Change the network type from N-only to NA-mixed.
Navigate into router setup and find advanced settings. Restart the router. Unplug your wifi router for 40 sec and plug it in again. Right click and delete all the keychain having name with problematic SSID. EClose keychain and try to reconnect that ssid. Navigate into Network Preferences. Click Apply. Re-add the Wi-Fi interface and click Apply. Run your router firmware update. Speed, encryption, and the frequency. 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?
I am trying to connect my imac with my router.
I do not have more than 10 devices. Currently I have zero devices because I disconnected them all to help with this issue. Jun 14, 7: 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. 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. In OS X Select it in the results it should be at the top. The application is in the folder that opens. 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. Recommended settings for Wi-Fi routers and access points. 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. Jul 20, A connection timeout occurred More Less.
Click on Network. In the window that loads after that, near the top, is a drop-down menu labelled "Location: A new line will appear ready to be given a name. I usually enter the date to help me keep track of when I made the new location, and to help prompt my memory why I did it. Give it a name. When you click ok that new location will load automatically.
You may have to delete the extra connections you don't use, such as Bluetooth PAN, or Firewire, just to keep the side pane clean. But no one really knows why it lost the connection in the first place. Just a weird bit about OS X. Been there, done that. I found the source to my problem, but not something that might be a general answer for all with this problem. After exhausting the other answers here, I just started trying anything.
How to Fix “A connection timeout occurred” error on Mac – Mac OS X Blog
What I discovered was that I have an external HD connected by firewire, and had it running when I rebooted after installing software. With the drive running, no connection. I shut off the drive and it immediately connected. Go figure! It runs fine of I start the drive after startup, but not during.
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Mac Mini C2D 2. Perhaps the wires acted as antenna or otherwise changed the power available to the Wi-Fi chipset, but I'm not seeing these timeouts after changing my connected devices and cables. Going into keychain and deleting the entry for the wifi network solved it. Just connected to the network again and entered my credentials. There was something wrong with either the password I doubt this or the authentication mechanism that was somehow paired with the keychain entry.
Anyway, this also means that going the manual way, as suggested by drovnik will also work, though I have not tried it. You can try resetting the connection information for your router by "forgetting" the router information:. You can't transmit on the same channel as other wifi networks. If there is a conflicting router, it may be taking precedence over your router.
If the above still doesn't work, try some of the troubleshooting tips from here: Open the wifi menu and click "Join Other Network In pop-up dialog explicitly enter the network name, encryption method and password. That's it. Works every time in these situations. Shane's Answer above is very good but would probably be my 4th step.
Mac OS X Lion/Mountain Lion - Could not join network/timeout
Prior to that, I would first try turning off and on wifi, followed by power cycling the router physically disconnect the power, wait 1 min then restore power , and then re-starting the computer. These are all very simple steps but are good things to try before you begin changing settings and re-building connections. I too had the same problem. Really easy solution.