Xperia Z3 (home) WiFi problems

[Invictus_]

I have a problem in wifi, always appears a yellow icon in the wifi icon, causing the connection to be limited, since even realized several tests exclude my Mcafee anti virus

[SergioPL1]

Check DHCP server in your home network.
Yellow mark means that your Xperia cannot get proper network settings from your router. Start from rebooting it and your phone.

[Invictus_]

the problma is that this happens in several networks in my home in my service and sometimes with 3G