Silent auto update for windows clients

Hi, i would like to set up the silent auto update client but I don’t really understand how to set up it.
What I have done:

  • Download client from update server -> Checked
  • Autoupdate clients -> Checked
  • Silent autoupdate -> Checked

But don’t work.
Can you help me?

Server: 2.2.7 on Debian 9
Clients: 2.1.17 on Windows 7