@Johnny2Shoes: I got it working on Windows 8.1, so I'm guessing it'll work on 8.0 as well. I did find that using anything other than the 'working directory' as the storage_path fails. The following configuration works for me: { // path to folder where Sync will store its internal data, // folder must exist on disk"storage_path" : "./", // run Sync in GUI-less mode "use_gui" : true, "webui" : { // IP address and port to access HTTP API "listen" : "127.0.0.1:8888", // login and password for HTTP basic authentication // authentication is optional, but it's recommended to use some // secret values unique for each Sync installation "login" : "api", "password" : "secret", // replace xxx with API key received from BitTorrent "api_key" : "" }}The key here is "storage_path" : "./" This will create the storage path in the same directory as the btsync executable, which is probably not a bad thing since this will be your application directory if you integrate it with your own software. This will also prevent storage_path collisions with other instances of btsync on the computer.