I've got an unusual problem.
From time to time over the last three days, my internet connection is dropped. Not suddenly, as I first thought, but gradually. The Windows 10 Network Troubleshooter would tell me various things, from 'your modem is experiencing connectivity issues' to 'a cable is disconnected' to 'Your DNS server seems to be unavailable.'
My ISP, Comcast, has been unhelpful. They're sending a technician to check my cabling. But it's obvious the problem is coming in over the wire.
I used to unplug my modem and my router/firewall and sometimes reboot the entire system to get connectivity back, with mixed results. Eventually, through trial and error, I found that I could reboot the modem from its interface, and this would solve the problem.
Within the last day, however, I found that my router/firewall can show the DNS servers disappearing from my configuration. The window that shows the IPv4 address for my DNS servers would simply show zeroes. Sometimes refreshing the configuration helped. Other times, not. Sometimes I could not log in because my local domain was not available. This problem also sometimes resolved by refreshing the window, and sometimes not. It happened again as I was composing this message, in fact.
And then today, I couldn't get to the router/firewall at all. Instead I received this message from Firefox 47.0.1:
XML Parsing Error: unexpected parser state Location: jar:file:///C:/Program%20Files%20(x86)/Mozilla%20Firefox/browser/omni.ja!/chrome/browser/content/browser/aboutNetError.xhtml Line Number 436, Column 58:
I closed and relaunched Firefox and got back into both router and modem without a sign of trouble. But every fifteen minutes or so elements on a page won't load, and I have to go to the router interface, refresh the configuration, and test it. Sometimes this clears up the problem; sometimes not, and I have to retry connection to the router until it lets me in.
I am not sure what's happening. My equipment and software, including network adapter, all appear to be functional. MBAM and Adw Cleaner show no malware, and avast! shows no virus. It looks for all the world to me as if whatever is causing my browser -- and router, and firewall, and modem -- to fail is coming from outside.
One thing more. I use the Google tool Namebench to find me the fastest DNS servers in my vicinity. Yesterday I ran it, and it found the DNS server at 126.96.36.199 to be an astonishing 124.7% faster than my then-current primary DNS connection. Namebench reported this server's name as Comcast Michigan Opt-Out US. I have had problems before with DNS service not being available, and have used Namebench to find me better DNS servers, but this discovery gives me pause. I've never seen this address or this name before. Could Comcast be the origin of my problems? Are they sending privileged traffic to my modem, router and browser that is causing them to fail?
I'm not internet guru enough to solve this one. But solve it I must; I'm being interrupted constantly which disrupts my work -- and if my ISP is responsible, I need to know how to present this problem to them or to regulators to address. Anybody know more than I do about what's going on? I need every input you can provide. This is driving me nuts.
Edited by Queen-Evie, 13 July 2016 - 03:39 PM.
moved from Web Browsing/Email and Other Internet Applications to Networking