I recently updated my Samsung Galaxy Note5 to Android’s new OS 6.0.1 Marshmallow. Immediately I noticed issues with WiFi network access. I tried forgetting the SSID’s, trying new ones, connecting to different access points and routers, nothing worked. After searching the internet and reading a plethora of forums, I finally found an acceptable workaround.
Turn off the Bluetooth on the Note5 and the WiFi works flawlessly.
Seems to be some fighting going on between the two because when they are both on my battery drains really fast. Thankfully I only use Bluetooth in the car, the one place I’m not connected to WiFi. It’s annoying, but at least it works for me. Samsung and Android need to fix this ASAP, highly irritating. Thanks to whoever it was that figured out the workaround. I visited so many sites I don’t even remember which one it was to give credit.