Windows 10 Cortana Search doesn’t respond to keyboard at all but you can paste contents in the box.
Solution is simple that you can hardly imagine: run ctfmon.exe
Contacted Microsoft support and someone remoted to my laptop. He recommended me to install CREATOR update. I did. Not solved. Contacted them a second time, someone remoted and check my laptop settings and said he wouldn’t fix as it’s on a Mac.
As I am running my Windows in Parallels, I contacted Parallels support and the technician said it’s a native windows problem, and advised me to run ctfmon.exe. BANG! Solved magically.
Looks like people from outside Microsoft knows more about Windows.