Same with my cams. Will not connect after the update, however, it appears the camera's are still working, just not in the network. My guess is the firmware is rejecting SSL connections after the KRACK fix, so it's impossible to login to the camera. Has anyone tried turning off WiFi SSL and using WPS to re-connect and downgrade the firmware? Seems this should work, and here is the prior firmware version. http://support.dlink.com/ProductInfo.aspx?m=dcs-936l