r/techsupport•
eldenv

"dns probe finished bad config" error message across network. Common fixes don't work.

From time to time (sometimes several times a day, sometimes only once or twice a week), I will lose internet connectivity and web pages won't load, usually displaying the "dns probe finished bad config" or "DNS_PROBE_FINISHED_NO_INTERNET" error message in Chrome (or a similar message that mentions DNS).

When it happens, it can last a few seconds, and then a refresh loads the page again, or it can take about 5 mins for it to fix.

This effects all the computers on the network (4 - a mix of Windows 10 and Mac), using Chrome or Safari. (I haven't been able to tell whether it effects Firefox, IE, etc as well).

On my PC, I have changed the DNS settings for both WiFI and Ethernet adapters to point to the google servers (8.8.8.8 and 8.8.8.4), and I have tried

ipconfig /release
ipconfig /all
ipconfig /flushdns
ipconfig /renew

netsh int ip set dns
netsh winsock reset

And it has not helped.

An engineer from our ISP (BT - in the UK) has found nothing wrong with the line, and the internet otherwise works well for us.

What could be the problem, and how could it be fixed?

Posted Mar 15, 2016, 1:19 PM UTC · edited

21
Ferahael•

There are a couple of things for you to try to help identify what the issue is . First type the following into an elevated command prompt

Ipconfig /flushdns Ipconfig /registerdns (You can also try ipconfig /displaydns to show what values are stored in the CNS cache)

Wait 15 mins or so and then have a look in the event log to see of there are any DNS related issues.

Take note of the date and time you have DNS problems again and go check you routers event log to see if any thing is listed there.

1