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Helpful answers
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Aug 13, 2013 11:38 AM in response to sad3980132by Baby Boomer (USofA),Try the basics first:
Change your router channel number. Most times this works & is all you have to do.
Disconnect & reconnect your modem. unplug it for about 10 seconds. Plug it back in. Do the same for Apple’s routers. Wait for everything to reboot.
System Preferences>Network
Click the Assist Me button.
In the next window that pops up, click the Diagnostic button & do the necessary.
Research Knowledge Base for network problems that pertain to the OS that is currently installed on your computer. See these basic networking KB Articles: http://support.apple.com/kb/HT1401 AirPort troubleshooting guide
http://support.apple.com/kb/HT4628 Wi-Fi: How to troubleshoot Wi-Fi connectivity
http://support.apple.com/kb/HT2712 Using network locations in Mac OS X
Manually provided DNS server addresses are higher priority than DHCP's
http://support.apple.com/kb/HT1714 Solutions for connecting to the Internet, setting up a small network, and troubleshooting
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What to do when you can't connect to the Internet
Also, run the Airport Utility app which is located inside the Utilities folder.
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If using a Linksys router, contact LinkSys Customer Support and/or post in their forums.
If using Apple's Airport, please re-post over in one of the AirPort Forums.
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Aug 15, 2013 10:09 AM in response to Baby Boomer (USofA)by sad3980132,Not sure if you understood my post or maybe I just don't understand. Four other Apple devices (2 iphones and 2 Mac Airs) do not have issues accessing the WiFi, so I am assuming that it is not the wireless hardware since the other devices are working fine. The keychain that remembers the passwords for the MacPro also shows that the propper password is being used so I tend to think that it is the MacPro and not the wireless hardware. When trying to use the password we get the "invalid password" message or sometimes the "session timed out" message.
Thank You.
