The action can’t be completed because the file is open in another program” might be one of the least helpful messages Windows ...
Personally, I don't recommend wasting money on cheap multitools. It's a false economy and a classic case of 'buy cheap, buy twice.' I've been sent dozens for testing, and they've all been poor quality ...
As with most of the saws, it required virtually nothing to get up and running. The device has the usual black and yellow ...