Recently I upgraded the slightly outdated version of a customer to the most current one.
Since that time it happens (I think after the service is up for some time - we do still talk in hours here, not in days or weeks), that people, who log in for uploading files, are not seeing the directory tree loaded (and Filezilla attempts to connect over and over again). The only solution found currently is restarting the service.
Platform: Windows 10 Build 1703 (64 Bit)
Best greetings from Germany
Olaf