Ch341ser Driver Windows 10
Have you tried the above drivers? But take a look at the UNO board first, you should be able to identify the chip; It's typically near USB port and crystal-resonator. Image of 16u2 chip Image of ch340g If you can't read what's on the chip, use a magnifying glass or cellphone camera + light. //Edit: The driver pop-up states ft232r, I overlooked that.
There have been some counterfeit FTDI chips though that causes problems; Some driver versions bricked the counterfeit chips, though MS has stopped distributing those //Edit2: IF you run into troubles with unsigned drivers,.