I am getting an error stating "Windows can't communicate with the device or resource (primary DNS server)". I have an internet streaming service for my TV and for my security system (SimpliSafe), both of which were functioning just fine. Only my laptop was having the problem. I've tried restarting my laptop, restarting my router, checking my wi-fi settings, all to no avail. It will connect briefly, then drops. Last night I was getting a message that my connection was unstable. Odd since I had my TV and my security system on, but who knows. I don't know what a "DNS Server" is, for starters, and I've done what I know how to do, which is very limited. Any suggestions would be greatly appreciated. I'm using and Acer Aspire laptop that's just over a year old, and it's running Windows 10. I have Kaspersky AV installed. Don't know if any of that helps. Thank you all, in advance, for your kind assistance.