DNS cache issue / Chrome

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Fred99

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Topic # 215414 26-Jun-2017 17:31

For some reason I get frequent DNS errors with Google Chrome only (W 10).

If I clear the Chrome cache using:

chrome://net-internals/#dns

it makes no difference.

If I run ipconfig /flushDNS, this sorts the issue - but it comes back quite soon.

When sites are unreachable using Chrome (DNS error) then the sites work perfectly using Edge or IE.

It could be something dumb I've done, but google has not been my friend trying to sort it out.

Any ideas what this could be and how to solve it welcomed - except "use another browser".

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BDFL - Memuneh
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Reply # 1807213 26-Jun-2017 20:17

Are you using your ISP DNS on your router? Any custom DNS on your PC? Is your PC getting the ISP DNS or your router's IP and the router relaying it? Have you tried restarting the router?

I know you said other browser work but could just be timing so restart everything?

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shk292

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Reply # 1807232 26-Jun-2017 20:33

I've had this on one PC ever since upgrading from Win 8.1 to Win 10. I have a batch file on the desktop with ipconfig /flushdns in it named "fix the internet" so my kids know what to do.

Annoying and I ought to fix it properly. I'm using a NF4V router, not sure if that's relevant. Standard ISP DNS via the router

Fred99

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Reply # 1807237 26-Jun-2017 20:46

It's been going on for a while - actually had a router replaced in the meantime due to a presumably unrelated fault. Was using ISP's DNS, then google DNS when the ISP had DNS issues a while back - that seemed to make no difference. I've tried setting the router to use Google's DNS, but still no difference.

Win 10 is set for "obtain server DNS address automatically".

I've also tried resetting defaults on Chrome (restore settings to original defaults).

After Chrome DNS error, I've opened Edge or IE, it loads the site with no problems, go to the still open Chrome, refresh, and it still comes up with DNS error. Close Chrome and restart it, still no good. Do an ipconfig /flushdns and then the site loads instantly.

I should try setting up another user account on the machine, then maybe switch accounts and try chrome and the site giving a DNS error on the other account. At least if that works, I'll be closer to an answer perhaps.

shk292:

I've had this on one PC ever since upgrading from Win 8.1 to Win 10. I have a batch file on the desktop with ipconfig /flushdns in it named "fix the internet" so my kids know what to do.

Annoying and I ought to fix it properly. I'm using a NF4V router, not sure if that's relevant. Standard ISP DNS via the router

Hmmm - this machine was upgraded from W7 to 10, but I'm glad in a way that I'm not the only one with this issue. To (probably) confirm that it's not the router, other devices connected to the same router don't seem to have the problem.

I agree that it's annoying - and I too want to try to fix it properly - hence my post. It's not a new issue - has been going on for a while - at least 6 months.

jamesrt

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Reply # 1807255 26-Jun-2017 21:28

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Your post sounds remarkably like the problem my wife's Windows 10 PC was experiencing - even down to the "reset DNS" shortcut to resolve it!

We fixed it in the end by turning off DNS Proxy in the router. (Orcon NF4V)

(Advanced Settings / DNS Proxy)

freitasm

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Reply # 1807261 26-Jun-2017 21:48

Having Windows use the automatic DNS does not really answer my question. The router could be telling Windows to either use the ISP DNS or it could be saying "here use my address and I will proxy DNS for you" (which is the case in the reply above).

My suggestion is to find out what your router is configured to do and turn off the DNS proxy in case the router is causing problems.

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Fred99

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Reply # 1807266 26-Jun-2017 22:03

Done (DNS proxy turned off in NF4V router). If this solves the issue, I'm still lost as to why other browsers and other devices using the same router had no issue.

I think (but not absolutely 100% sure) that the issue was there before - with different model router even though I'd set that to use Google DNS. I've binned that one - wouldn't boot - so have no way to check now what settings may have been.

freitasm

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Reply # 1807268 26-Jun-2017 22:06

Most routers will proxy DNS saving you... A couple of milliseconds.

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Fred99

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Reply # 1807269 26-Jun-2017 22:11

I'll post again in a few days. If that's solved the issue - I should know by then. Flushing windows DNS cache had become at least a daily exercise.

chevrolux

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Reply # 1807273 26-Jun-2017 22:17

NF4V had a major issue with the internal dns service crashing and the easiest thing to make it go again was a reboot.

I think they fixed it in the latest firmware but the simplest thing to do was set the dhcp server to assign the ISP dns server directly to the client.

timmmay

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Reply # 1807302 27-Jun-2017 06:04

Is it just with Chrome, or does it do it with say Firefox? What exactly is the error you get?

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Fred99

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Reply # 1807318 27-Jun-2017 07:46

I'm pretty sure it is (was?) just with Chrome. Was DNS error, typically a few images on a web page wouldn't load, then many entire websites unreachable using Chrome, but would load using IE or Edge (I don't have FF on this PC). I can't get my head around why that could be the case - why flushing the windows DNS cache was needed for Chrome which has a built-in DNS cache, when presumably IE etc use the windows cache - but didn't seem to be affected.

I could be wrong about IE loading pages when Chrome errored out, but on a few occasions I definitely copied URLs from Chrome when a page wouldn't load, pasted to IE or Edge and they loaded immediately.

timmmay

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Reply # 1807381 27-Jun-2017 09:11

Plugins tend to be a major source of problems in browsers. Disable them all.

If you get the error does restarting Chrome help? How about if you make sure all Chrome processes are killed? To fix this you probably need to be 100% sure where the problem is.

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