I have a Sony Xperia Z2 tablet and just had Marshmallow downloaded. I have 2 user accounts on the tablet, one for me and one for my wife. When I log on, a Wi-Fi connection is automatically made. When my wife logs on, there is no automatic Wi-Fi connection made. She goes into the settings and the Wi-Fi is turned off. She sets it to on and a connection is made. The next time she logs on, she has the same issue. The Wi-Fi "on" setting never gets saved. This was not a problem before upgrading to Marshmallow. Any ideas?