I installed the latest version of Daedalus on this Win 10 laptop as a manually downloaded upgrade yesterday.
The process was very quick and smooth, but after I clicked on the Start menu shortcut and OKed the UAC box nothing else happened. I checked for related processes in Task Manager but saw nothing.
I then restarted the laptop then started Daedalus not using a shortcut, ie by opening the program folder and double-clicking on the cardano-launcher.exe file. The UAC then Daedalus came up and worked just as it should.
However, when I tried to run it today, exactly the same thing happened as yesterday. It just occurred to me that the problem might be with the shortcut so I’ll try without it now.
OK, it worked. Something very strange going on here. There was a shortcut related problem after a previous update but that was because the arrangement had changed so that the shortcut now pointed at the wrong file, but that’s not the case this time.
Edit: just tried again using the shortcut, this time it worked. So it’s a head-scratcher.