topic Re: Could not perform DNS name resolution in Broadband

Could not perform DNS name resolution

JoshhDaw — Thu, 13 Jul 2023 15:34:48 GMT

Hi I have the Zyxel 5G router from three & for the last 3-4 days I have been having issues with the network (it has been fine for the previous 8 months)

all 5 Nintendo Switches in the house won’t work and come up with error - Could not perform DNS name resolution.

All eufy (Anker) security cameras also not working.

Every over device no issues though!

I have tried everything from changing DNS to 8.8.8.8 / 8.8.4.4

resetting to factory & changing APN.

Three didn’t really seem to have a clue what they was on about and advised that they have ‘raised’ this and I will hear back within a week. Honestly I can’t wait a week with children wanting to play on their switches & having no security in the household!

thanks in advance. It’s driving me a little crazy haha

Re: Could not perform DNS name resolution

Anvil_Iron — Fri, 14 Jul 2023 10:23:51 GMT

Which firmware version is installed on the Zyxel router?

It could have been updated recently to version b14.

Re: Could not perform DNS name resolution

JonathanB — Fri, 14 Jul 2023 10:45:39 GMT

I wonder if this is similar cause as to the VPN issue you reported @Anvil_Iron?

@JoshhDaw there's more info on but setting the APN to manual mode and using the 3internet APN with IPv4 only may help.

Thanks,
Jonathan

Re: Could not perform DNS name resolution

Anvil_Iron — Fri, 14 Jul 2023 11:26:14 GMT

Hi @JonathanB , it could well be. It's worth a try if DNSv6 server info is displayed in System Info.

Re: Could not perform DNS name resolution

JoshhDaw — Fri, 14 Jul 2023 22:26:04 GMT

Honestly having no luck! After souring the internet for most of the last 2 days and three saying it could take them several weeks to resolve I just ordered a new contract & got them to exempt my current one.

Logic was they have no idea what’s going on so seemed my best chance of fixing!

Since getting my router now having the error of 5G not working at all. Deffo not the sim card as I’ve tried the old one in the new router still with no luck.

Three told me that there was no 5G in my area and then was speechless when I said the previous router was still running 5G fine and that I’d been using a previous router for 8 months 😂

Re: Could not perform DNS name resolution

JoshhDaw — Sat, 15 Jul 2023 06:24:41 GMT

I did try this with no luck 😞 got them to replace the hub & sim but now 5G doesn’t work at all lol

Re: Could not perform DNS name resolution

Anvil_Iron — Sat, 15 Jul 2023 11:09:11 GMT

Is your replacement router still a Zyxel NR5103E?

What firmware version does it have?

After a factory reset, does the router display both DNSv4 and DNSv6 addresses or just DNSv4 addresses on the System Info page?

Re: Could not perform DNS name resolution

samuelcooper96 — Sun, 16 Jul 2023 14:47:07 GMT

I could also do with finding a solution. All devices except my Nintendo Switch connect through to the internet fine with my NR5103E router. I've tried resetting Nintendo Switch, router, trying public DNS such as Google's and Cloudflare's, tried entering DNS manually on Nintendo Switch, all to no avail.

So something must be happening on Three's network?

Re: Could not perform DNS name resolution

GregBlanks — Mon, 17 Jul 2023 09:57:01 GMT

I have gone through this same issues started on wed/thurs all my camera not connecting . After playing in the router settings I found a fix , go into router settings and into remote management and under WAN enable HTTP HTTPS and SSH click apply . this fixed my camera allowing them to reconnect etc . hope this helps

Re: Could not perform DNS name resolution

samuelcooper96 — Mon, 17 Jul 2023 19:54:38 GMT

I have done exactly this and still my Nintendo Switch does not connect for some reason. I’m not sure what else there is to do

Re: Could not perform DNS name resolution

GregBlanks — Tue, 18 Jul 2023 12:49:57 GMT

Have you enabled the UnPN ?

Re: Could not perform DNS name resolution

JoshhDaw — Tue, 18 Jul 2023 13:06:53 GMT

Not sure if it’s a mixture of using a different sim card or trying this but it’s now working!

Only problem is that this router is now on a cancelled package as they signed me up to a new one to try and resolve it however the new router 5G doesn’t work!

Replacement router (3rd one lol) came today & still has no 5G however is on b12 so hoping that a b14 firmware upgrade over night fixes it.

Re: Could not perform DNS name resolution

JonathanB — Tue, 18 Jul 2023 15:26:27 GMT

Hi @JoshhDaw,

Let us know how this goes, there has been instances in the past where that router hasn't picked up 5G till after the first firmware update is delivered to it. If it's still a problem after updating I can get you in touch with some more help.

Thanks,
Jonathan

Re: Could not perform DNS name resolution

JonathanB — Tue, 18 Jul 2023 15:28:26 GMT

Hi @samuelcooper96,

There's been another couple of suggestions for connectivity issues like this. Have you also tried enabling uPNP and the steps described on to manually set your APN on IPv4?

Thanks,
Jonathan

Re: Could not perform DNS name resolution

GregBlanks — Tue, 18 Jul 2023 17:17:29 GMT

I more thing under remote management enable UpnP also then try

Re: Could not perform DNS name resolution

JoshhDaw — Wed, 19 Jul 2023 06:31:07 GMT

Hey Jonathan,

Still no luck. Is still stuck on b12. Really don’t know what to do now as I’m unable to work as well. Really frustrating 😞

Re: Could not perform DNS name resolution

JonathanB — Wed, 19 Jul 2023 13:05:11 GMT

Ah that's really frustrating. I'll PM you so we can get you in touch with some colleagues that can look into this. I expect we'll be able to sort another exchange.

To view your private messages on the community, click on your avatar image in the top right of any community page, then "Messages".

Thanks,
Jonathan

Re: Could not perform DNS name resolution

samuelcooper96 — Sat, 29 Jul 2023 20:35:01 GMT

Hi everyone, I’ve finally had the chance to try and implement some of the suggestions to get my Nintendo Switch to connect to my wifi and still nothing has worked.

I have disabled ipv6, I’ve enabled UnPnP, I’ve changed from 3internet to Three.co.uk, I’ve even downloaded the Three 5G App to try and see if my device is blocked for some reason, which it is not.

The only response that has changed on my console now is that rather than a DNS error, instead it throws up a “Could not connect to internet. No response from the server” error instead.

Every other device continues to work except my Nintendo Switch and it’s really beginning to get on my nerves now

Re: Could not perform DNS name resolution

samuelcooper96 — Sat, 29 Jul 2023 21:34:40 GMT

Right, well annoyingly after a night of fiddling around and resetting, and even factory resetting my Switch which may not have been quite necessary now, the issue has been fixed.

Frustratingly, I can’t tell which solution actually fixed the problem, but thank you for all the suggestions anyway.

In any case, it’s time to re-download all my games…

Re: Could not perform DNS name resolution

wanokuni — Sun, 30 Jul 2023 13:40:27 GMT

Hi mate, I’ve had this problem for 2 weeks now and I’d love to know what steps you went through. I just got a replacement SIM and was really sad to see it didn’t work.