mc agent connectivity backup job software error upgrade tracker network drive selective sync certificate webui folder password local system local service windows installation license internet licensing multiple device local storage bootstrap bootstrap token expiration priority reset sync options laptop desktop pre-existing folders .sync archive requirements destination system hardware encryption free vs home android destination folder sync sync deleted files ntfs posix synchronization api permissions logs management console error high availability security dns mapped drive samba smb afp communication port drive network update wan wan optimization group rename loading list of files ui endpoint delete service selectivesync syncoptions