mount error(115): Operation now in progress
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

kernel: [373776.575751] CIFS VFS: Error connecting to socket. Aborting operation.
kernel: [373776.576188] CIFS VFS: cifs_mount failed w/return code = -115

//192.168.1.20/download /media/download cifs noperm,rw,username=<user>,password=<password>,iocharset=utf8 0 0

sudo mount -t cifs -o noperm,rw,username=<user>,password=<password>,iocharset=utf8 //192.168.1.20/download /media/download