I'd like to use Fuseki Web App on Windows. I already tried to use Fuseki on MacOS, I created the /etc/fuseki folder (with the right privileges): no problem with it. But on Windows the deployment failed maybe because the folder doesn't exist (fuseki doesn't find the folder). Where should I create this folder? Should I define the FUSEKI_BASE as environment variable?
/etc/fuseki is a unix-ish way of doing things. You can do that if you want to or you can define FUSEKI_BASE. The choice is yours.