wifi doesn't reconnect after wake up

I have had the same problem on occasion. My workaround is to click on the wi-fi icon in the menu bar. The system searches and finds my network. I have read in other posts that this problem is known to Apple.

Barry

I found a solution to wake from sleep wifi connection issues here.

http://www.imore.com/how-fix-mavericks-wi-fi-zapping-bluetooth

I was having issues where my Macbook Pro Retina running Mavericks wouldn't reconnect to my wifi router on wake from sleep unless I rebooted the router. I'd tried everything (so I thought) and it was driving me nuts.

Here's what to do to fix it. Don't ask me how it works, but deleting the "com.apple.Bluetooth.plist" file resolves the issue.

1. Go to your Mac's Finder.
2. Open Macintosh HD (or whatever your Mac's hard drive may be named)
3. Open Library
4. Open Preferences
5. Find the file called "com.apple.Bluetooth.plist"
6. Move it to your desktop. It should copy there.
7. Remove it from the Preferences folder by dragging it into the Trash. The Mac will tell you that Finder wants to make changes. Type your password to allow this.
8. Restart your Mac
9. You will have to reconnect and pair any bluetooth devices you may use (keyboard, mice etc.)
10. Once your happy that all's ok you can delete the desktop copy of the plist file (a new one is recreated on restart in step 8)