Windows 10 Com Ports

If one of the updates of Windows 10 made your Com port(s) go away, here’s the solution.

1. Open “Device Manager“
2. Select menu “Action” -> “Add legacy hardware“, then Click “Next“
3. Select “Install the hardware that I manually select from a list (Advanced)” -> then click “Next“
4. Scroll down, then select “Ports (COM & LPT)“, then click “Next“
5. Select “Manufacturer” as your need, (in this case, I’m selecting standard type or default option) then click “Next“
6. Finish!

From https://www.windows10forums.com/threads/ports-com-and-lte-not-showing-in-device-manager-in-windows-10.6057/