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#1
"Ethernet" doesn't have a valid IP configuration
Problem: intermittent no internet connectivity
Running network troubleshooter gives me the error message: "Ethernet" doesn't have a valid IP configuration
My system
Toshiba satellite laptop S75 hardwire to a personal modem arris sb6141, my ISP is Comcast xfinity. No router. I have high speed internet.
I have had the same setup for at least 2 years without this problem. All of the sudden about a month ago, I started getting no internet connection intermittently
Without any updates or changes to my system. The issue comes and goes, meaning sometimes there is no internet in the morning, I will come home from work at night and internet will be working.
I have talked to Comcast reps over the phone many times and they tell me it looks good on their end and that they can see my modem, they did a reset of my modem but it didn't help.
Comcast has sent 3 different techs at my place and they both said the wiring has no issue. I had the third comcast tech remove a splitter outside my apartment, but it made no difference for my connection.
I have replaced the Ethernet cable, but there is no improvement.
When it first started I had windows 10 pro original version on my laptop, I updated windows 10 to build 1803 but it didn't help.
Then I updated windows 10 to build 1809 and internet started working again for a week with no issue at all.
Then the intermittent no connectivity issue came back.
The lights on the modem look good. There is no yellow exclamation point in the device manager. The IP configuration is set to obtain an address automatically. I have done a network reset. I need your help, please.
I can get wi-fi to work on same laptop (open xfinity wi-fi from neighbor).
I installed the latest drivers, the network driver version is now 10.31.828.2018 and I did a network reset, but it didn't help.