Open a folder with File explorer using .bat
You can try like this:
%SystemRoot%\explorer.exe "c:\Yaya\yoyo\"
I think it should be this:
explorer c:/Yaya/yoyo
The start command needs blank quotes at the beginning, as it uses the first double quoted phrase as the "Window title"
start "" "c:\Yaya\yoyo\"
Here are two examples to open folders, one in the location and the other with the folder selected in the parent directory.
:: Open an Explorer window with the 'temp' folder displayed and its parent hidden:
Explorer.exe /e,/root,"%temp%"
:: This one will open the parent directory and automatically select the 'temp' folder:
Explorer.exe /select,"%temp%"
:: See more examples here: https://ss64.com/nt/explorer.html