In Developer Update, you can invoke Windows executables from the WSL if you add an extension file. You can open the current folder as follows.
explorer.exe .
But this will only work if you are in the Windows folder (/ mnt / *), otherwise it will open the c: \ windows \ system32 folder by default.
If you still need a start, you can create an alias
alias start='cmd.exe /c start'
then start . will work too.
onoma source share