When i try to connect my MacBook pro to an Airport Express (running in dual mode) in 802.11n 5Ghz, i am getting this error “Failed to join “network” A connection timeout occured”.
Rebooting both Mac and Airport Express not fix this issue.
- Remove and forget the network in is entirely.
- When you see 5ghz SSID display under new networks choose it. Error will occur.
- Disable SSID for the 2.4ghz (If you are suing the same name).
- Then enable WiFi password to use none.
- Once you complete this steps your Mac Pro or Mac Mini was able to connect to the 5Ghz SSID.
- Left the computer connected and log onto your access point & re-enable the WPA/2 encryprtion.
- As the Mac computer disconnected, attempt to relog (this time with a password). It will work,
Fix 2 (for Netgear WNDR3700 running DD-WRT)
Deleting preference file or removing known networks not fix your issue.
Change to NA-mixed.
- On your Mac click the WiFi symbol on the top toolbar.
- Choose “Open Network Preferences”
- Select “Assist Me” button at the bottom.
- Select “Diagnotics” button on the popup.
- Choose “WiFi” and click Continue.
- Choose the Network Connect and click Continue.
Also try our suggestions
- “Connection timeout” issue was caused by the DisplayPort to Dual-Link DVI Adapter. Put the adapter further away from your MacBook Air.
- Use WPA2 instead of WEP on routers.
- Change the network type from N-only to NA-mixed.
- Navigate into router setup and find advanced settings. Locate the option for UPNP and disable it.
- Restart the router.
- Downgrade your Knext driver
- Turn hibernation OFF on the Airport and restart the OS.
- Unplug your wifi router for 40 sec and plug it in again.
- Navigate to Macintosh HD ->Library ->Keychain, Open file System.Keychain. Right click and delete all the keychain having name with problematic SSID. EClose keychain and try to reconnect that ssid.
- Navigate into Network Preferences. Delete the Wi-Fi interface from the left column. Click Apply. Re-add the Wi-Fi interface and click Apply.
- Run your router firmware update.
- Some times this issue happened because of te hardware issue. Take your device to Apple Care.