I seem to be getting Error 21 "network change detected " only on my computer with Chrome and Windows 10 mostly on netzero webmail . I don't get this problem with Edge browser on same computer. The best fix for me seems to be rebooting the router and this lasts for a few days then the problem reappears. I have tried all the other suggested solutions and I can't seem to get a permanent fix with Chrome browser on Windows 10. I never had this problem when I was using Chrome when I was running Windows 8.1 Any suggestions / Tks