I am running wsus in 2012 r2 server. My wsus server is in 10.1.1.x subnet. I have 3 subnet running on client machines . While PC group in 101.1.x reporting successfully in wsus other two sinners 10.2.1.x and 10.3.1.x not reporting in wsus. Wsus picking up this machine how ever last report dates showing as “not yet reported”. I have tried the troubleshooting like restarting windows update service , stopping firewall, windows updates readiness tool, reset windows update component, Sfax scan.
What could be the reason ?