I was prompted to update to Paint.NET 4.08 today, which required a more recent version of .NET Framework. Proceeding, and after progress bars for the download and installation of .NET Framework v4.6 had completed, I received the message "Installation is complete". I seem to be in some sort of loop, however, because I am asked to install it again: a window 'Set up FrontEnd.exe' followed automatically stating, "This application requires one of the following versions of the .NET Framework - .NET Framework v4.6 - Do you want to install this .NET Framework version now?" Clicking "Yes" takes me to a web page http://dotnetsocial.cloudapp.net/GetDotnet?tfm=.NETFramework,Version=v4.6&processName=SetupFrontEnd.exe&platform=0009&osver=6&isServer=0&shimver=4.0.30319.34209 thatoffers a .exe file, NDP46-KB-3045560-web.exe, to download. I am bemused and concerned.