I'm building an app that for it to work I need to sync user files among the devices, which uses the same Microsoft Account. I tried Roaming AppData but it takes a lot of time to sync between devices and sometimes it doesn't. So I cannot say it is perfectly consistent solution to rely on. Is there a way to manually sync RoamingFolder? Or should look for other options? For instance, can I use user's own OneDrive to store these files? Or a free online database service perhaps?