Hi, just to add on to this: When copying an encryted file from one zip-archive into another one, in which all the files are encryted as well, the copied file is not encrypted. My only workaround is very tedious: first copy the file to a normal folder and thereafter add it via the 7-zip context menu to the destination archive. It would help already if I could at least encrypt a file that I have copied to an archive. Is there a possibility to do this subsequently? I looked out for this in many places...