Drag & drop doesn’t work either: no transfer is initiated. “Show the menu panel” does open the client conf menu. I think this is a problem with Catalina, similar if not the same as referenced here: https://www.nomachine.com/TR10Q09429 I think this because using Ubuntu 18.04 in Virtual Box the transfers work perfectly, so the problem doesn’t seem to be in NoMachine. I’ve granted NoMachine full disk access, and I haven’t changed anything in the client firewall. The transfers just stopped working. I cleared the logs on both machines and re-initiated a transfer…here are those logs.