Hi, It turns out that 6.4.2 really was worth skipping as the misapplied printing fixes caused some major headaches, 6.4.3 fixes these problems and not much else. For more details, please see: https://github.com/Xpra-org/xpra/releases/tag/v6.4.3 The MacOS and MS Windows builds do have some important library updates: OpenSSL and more. Cheers, Antoine