Mid-afternoon today (8/25/16) I received an automatic update to my Norton Antivirus software that required a system re-boot. After I rebooted and logged back in I started getting messages from Windows 10 saying that winnsi.dll "is either not designed to run on windows or it contains an error.... Error status 0xc0000020." This seems to happen when certain programs try to load. The programs do load and appear to function but it's a real pain having to clear tens of dialog boxes that are reporting problems. One other strange thing, when I try to start Outlook and log in, the status immediately switches to "disconnected" and I can't access my e-mail from this computer.
I need to find a place where I can download and install a new copy of winnsi.dll.