iMac a wifi fall on wake

I upgraded to macOS Sierra 3 days.  Since then, whenever my computer goes to sleep and I wake up, I'm disconnected from the internet (not sure if it is disconnected while you sleep or disconnects when I go to turn it back on). I tried to clean up all of the .plist files, reset the PRAM and SMC and by setting a custom network.  None of them helped.  Someone at - it a solution?

Please look over the Wi - Fi section below section:

http://osxdaily.com/2016/09/24/troubleshooting-MacOS-Sierra-problems/

Tags: Mac

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