@jens I think he wanted to guide me to the Windows key, to get me to run something to open up my PC to attack. But I blew it a bit after this fragment by answering "no" when he asked if it was a Windows computer.
I've had similar kinds of conversation with "Windows Support" scam callers. I just forgot the details and never recorded them. But yes, following instructions and being misleading as a consequence wastes their time, it's the best defence IMHO.
Something something Windows and I was running Linux at least was similar enough 😂
A private instance for the Finkhäuser family.