Hi,

Does extensions and updates show "Arduino IDE for Visual Studio" as installed? There is a GDb option in the list which would be the wrong one. 

Please confirm is anything shows in "tools>options>visual micro"

Thanks

Great. Yes we are going to make the extension names more obvious. I think it's an easy mistake.

The Uno and Mega are not so easy because I think they need fuses to be changed and can cause the boards to become useless without high power programmer.

The Zero should work well out of the box as will a few other boards. If you get a board that should work with j-link but isn't known to vm gdb you can add the config yourself to make it work. In which case please open a forum thread in the gdb section so we can work through a solution. Then it can be included in main builds. Over time we should build standard support for as many boards as possible but each has it's differences.