Macbook Air Doesn't Connect To Wifi Upon Waking

Since installing Yosemite, whenever I wake my Macbook Air from sleep, it doesn't connect to Wifi. In order to get it to work, I have to open up Network Preferences/Assist me/Diagnostics and go through that process (then it works). Any suggestions on how to fix this?

Hey there alhs77st,
If you are still having this issue where your computer is not connecting to your Wi-Fi network when you wake it from sleep, I would use the following article to help resolve that. This section in particular:
Wi-Fi: How to troubleshoot Wi-Fi connectivity
Symptom: After restarting or waking from sleep, my computer might not connect to the Internet
Thank you for using Apple Support Communities.
All the very best,
Sterling

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MacBook Air
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Hi Anh Tu BUI,
Thanks for using Apple Support Communities. This article has information on troubleshooting Wi-Fi issues for your MacBook Air:
Wi-Fi: How to troubleshoot Wi-Fi connectivity
http://support.apple.com/kb/HT4628
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~~~~~~~~~~~~~~~~~~~~~~~~~
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https://discussions.apple.com/thread/4823738?tstart=240
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http://www.theipadfan.com/workaround-ipad-wifi-issues/
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http://tabletcrunch.com/2012/10/27/fix-ios-6-wifi-problems-ssid/
Wifi Doesn't Connect After Waking From Sleep - Sometimes increasing screen brightness prevents the failure to reconnect after waking from sleep. According to Apple, “If brightness is at lowest level, increase it by moving the slider to the right and set auto brightness to off.”
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http://tabletcrunch.com/2012/09/27/fix-ios-6-wifi-problems/
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http://gizmodo.com/5944761/does-ios-6-have-a-wi+fi-bug
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http://www.iphonehacks.com/2012/09/fix-wi-fi-connectivity-issue-after-upgrading- to-ios-6.html
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http://www.youtube.com/watch?v=XsWS4ha-dn0
Apple's iOS 6 Wi-Fi problems
http://www.zdnet.com/apples-ios-6-wi-fi-problems-linger-on-7000004799/
~~~~~~~~~~~~~~~~~~~~~~~
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iPad: Issues connecting to Wi-Fi networks http://support.apple.com/kb/ts3304
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iOS: Connecting to the Internet http://support.apple.com/kb/HT1695
iOS: Recommended settings for Wi-Fi routers and access points http://support.apple.com/kb/HT4199
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http://osxdaily.com/2012/03/21/fix-new-ipad-3-wi-fi-reception-problems/
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http://appletoolbox.com/2010/04/ipad-wi-fi-problems-comprehensive-list-of-fixes/
Connect iPad to Wi-Fi (with troubleshooting info)
http://thehowto.wikidot.com/wifi-connect-ipad
Fix iPad Wifi Connection and Signal Issues http://www.youtube.com/watch?v=uwWtIG5jUxE
Fix Slow WiFi Issue https://discussions.apple.com/thread/2398063?start=60&tstart=0
How To Fix iPhone, iPad, iPod Touch Wi-Fi Connectivity Issue http://tinyurl.com/7nvxbmz
Unable to Connect After iOS Update - saw this solution on another post.
https://discussions.apple.com/thread/4010130
Note - When troubleshooting wifi connection problems, don't hold your iPad by hand. There have been a few reports that holding the iPad by hand, seems to attenuate the wifi signal.
Wi-Fi or Bluetooth settings grayed out or dim
http://support.apple.com/kb/TS1559
~~~~~~~~~~~~~~~
If any of the above solutions work, please post back what solved your problem. It will help others with the same problem.
 Cheers, Tom

HT4437 I have a Macbook Air, an iPad3, and Apple TV. I want to be able to use the iPad3 for training through the Macbook Air which is connected to a projector. Any ideas?

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Macbook Air Doesn't Connect To Wifi Upon Waking

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