The machine is a Lenovo Twist running Windows 8.1 Pro. Any suggestions?
Ellis,
Another thread on this popped up yesterday. The solution was to completely uninstall .NET and then download/install .NET 4.5.2 from Microsoft.
After that you can proceed as usual.
That's the extreme solution; many customers have been fixed simply by rebooting.
Thanks Bradley, I'll suggest that first next time.
Thanks so much. FYI: In Windows 8.1 .NET Framework is built-in and not able to be uninstalled, however installing 4.5.2 took care of everything.
Had a very similar problem yesterday: the issue for me was that some unrelated software had updated itself and expected a system restart.
Windows apparently knew a restart was needed and would not install the Net framework upgrade.
Restarting the computer cleared the problem.
