> > Server updates installed? > Nah, it's had the windows update icon in the tray for months.
If yes maybe uninstall .net and reinstall. > Yep, that fixed it, somehow! I uninstalled 4.6.1. In VS2017 I created a setup project for my WPF program, specifying a dependency upon 4.6.1. When I run the installer EXE launcher (not the MSI) it detected the missing Framework and I said yes to "download from the vendor's website". After that it all came good. So I was rescued by an automated reinstall. I guess the reinstall used a different 4.6.1 installer?! In the morning I used the "4.6.1 offline installer", which seemed correct. Uh, who knows? *Greg K*
