Turning off "DNS Error Assist" does nothing

Yes the management of the DNS Assistance it handled in your AT&T Account:

For those who are searching for "DNS error assist", the privacy choice page to supposedly turn it off is at https://www.att.com/acctmgmt/profile/privacychoices

Dave

Having the same issue as H4rry1. Just switched to ATT for internet service. At first I was using the Active Armor because the rep recommended it and I had no problems. Then husband returned from an overseas trip and for the last week has been attempting to connect with sites required for his work and kept getting the DNS error message. We turned off Active Armor, turned off DNS error assist, and still he cannot access the required sites. He has cleared his cache, rebooted, and no joy. Contacted ATT service multiple times and they couldn't resolve the issue either. They finally sent him a link to connect with their "experts" - who are third-party, not ATT - but they have not responded for 24 hours. He can fire up his hot spot on his phone and get to the sites he requires - or go to the library or Starbucks - but that is not a sustainable solution.

@sunoe312  I can of course relate - If I may save you some of the frustration I went through - apparently the ONLY solution here is to use a secondary router (that you purchase) and setup IP forwarding on whatever port you connect it to. On the bright side, at least AT&T now allows this - they didn't in years past. 

There are different ways to approach this. You could spend money and get a nice WiFi router (mesh style or whatever) that replaces your AT&T WiFi altogether (it still has to connect to the AT&T router, but you turn off the WIFI functionality) OR you can buy a cheap small access point/router and dedicate it only to your office space. That is what I did initially - I bought a used Netgear access point for like $15 and that is what I use for work. I can either connect to it via WIFI or Ethernet.  That does solve the problem. You have to use a 3rd party router that allows you to setup DHCP/DNS internally (most do) since the AT&T functionality that normally handles this will be bypassed for that gateway. It requires some networking knowledge but there are a lot of articles describing how to set this up. Yes, it stinks that AT&T won't fix this problem - but at least there is a solution workaround.

the challenges you're facing with the AT&T DNS Error Assist feature, and it's frustrating that the usual troubleshooting steps haven't resolved the issue. It seems like you've thoroughly explored various options, including contacting AT&T tech support multiple times.

Given your detailed description of the problem and the steps you've taken, it appears that the issue lies within the AT&T modem or home service. Since connecting via your cell phone hotspot (also AT&T) works fine, it suggests a localized problem.

If AT&T support hasn't provided a satisfactory solution, and you've considered using a 3rd-party router downstream, one additional step you could explore is:

1. Check Modem Settings:
   • Access the modem settings directly (if possible) and review any DNS-related configurations or filtering options that might be causing the DNS Error Assist feature to persist.
   • Ensure that any changes made to DNS settings are applied and saved properly.

If this doesn't yield any results, your idea of using a 3rd-party router might indeed be a viable workaround. By placing a router downstream, you gain more control over your network settings.

In the meantime, you might also consider posting your issue on community forums or tech support communities where users may have encountered similar problems and found alternative solutions.

I hope you find a resolution soon, and your internet connection returns to normal.
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I want to share one more comment here in case it helps someone else going through this same problem with the DNSerrorassist:

I put my AT&T modem in IP Passthrough mode and installed a 3rd-party router and everything was working great - no more DNS hijacking... at least at first. But after a while I began to have some problems reaching certain work related vpn-only webpages again, and I was getting the AT&T search page sometimes - but it seemed to be intermittent.

I finally realized that while I did set up my 3rd-party router to use public IPv4 DNS servers (8.8.8.8, etc.) I forgot to do the same thing for IPV6, and the modem was automatically serving me an AT&T IPv6 DNS server address. Once I discovered and fixed that, I verified my PC is now seeing both IPv4 & IPv6 public DNS server addresses, and everything works great again!