RE: windows-8-1-windows-server-2012-r2-update-kb4034681

Also, there seems to be some known issues with Wireless and KB4034681... The KB article says: "NPS authentication may break, and wireless clients may fail to connect." There is a workaround for the NPS issue on the KB article. See also:

RE: windows-8-1-windows-server-2012-r2-update-kb4034681

Hi David, 4D 15.2 was released April 12th 2016 kb4034681 was released August 8th 2017 Maybe you could try a newer build of 4D? Perhaps the latest nightly build of v15 (August 22nd 2017) Or at least 15.4HF3 (July 6th 2017) -Tim