Original Macbook Pro Retina 15 not connecting to wifi after sleep

When Waking from sleep, it searches for wifi and finds it but doesn't connect most of the time. i click/select the network manually & sometimes it connects but iv ended up resorted to turning wifi off, then turn back on & it finds the network (it found earlier) AND connects to it automatically. this problem happens on other wifi's aswell, not just my home wifi.
Wondering why it can find the network after sleep, but doesn't want to connect to it. All my ios devices, my sisters MBP retina 13 connects perfectly. I've come to conclusion it must be my computer....

I to have this problem. I have a late 2013 Macbook Pro 13inch with Retina display. I soon discovered on my machine that if you disable Bluetooth then the macbook connects to the wi-fi as it should. I dont have a problem on my home network with any other apple devices and the connectivity issue is the same on what ever network I try. I soon realised that if I disabled Bluetooth the machine connects perfectly everytime. There is clearly a bug or some technical issue that occurs preventing wi-fi connection when you have Bluetooth enabled. Try it and see if it is teh same with yours?
I was hopeing that the fault or issue would be fixed with the latest OX update but alas it is still an issue for me on my machine. I have just taken to switching Bluetooth to off until I am connected and then just turn Bluetooth on if I need it.
Hopeing that some kind of fix will be issued soon.
Let me know if this Bluetooth issue is the cause of the issue as I woudl be interested.
Best wishes.
JB

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============================
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Original Macbook Pro Retina 15 not connecting to wifi after sleep

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