my printer lost connection with my network, what can I do to fix this.?

Question

Since I did the setup since last year I had no problem but now each time I try to print or scan I am having this windo " connection not aviable.. I followed all the troubleshoot and still. At a point I had to do the print  at the printer board and the status says connected, everything seems ok. I even restart evrything and still nothing. Can anyone help me fx this problem. thank you