@lazostat Anyway. I will turn router's wifi on when i am gonna use printer. It's a waste of time trying to figuring this. And i don't have time. Thanks for the help!

@lazostat When i turn on router's wifi everything works well. I see many posts about decos and printers, so i guess it's deco's fault.

It's the only device i have problem. Windows can't recognize it and i try everything. Disabled Fast Roaming, Disabled 5Gz, DIsabled Security, Enabled Guest Account, Disabled Mesh, Wi-Fi direct ON....