Spotted moments ago during Office 2013 installation on Windows 10:
And now what, Bill?
To make things even more spicy, while this error was displayed all the time in foreground, I've noticed another message in the background (in the notification area, next to Windows 10's clock) that:
- Office is being installed (click-to-run Office version; no questions asked),
- and... that it was installed.
I even managed to close above "error" with right-top "x" only to see message saying that my Office is installed and that I can now go off-line! :>