Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Solved - AVG IPv6 DNS Name Resolution Timed Out - DNS Client Events


03 Jan 2013   #1
bkl

Windows 7 Pro x64
 
 
Solved - AVG IPv6 DNS Name Resolution Timed Out - DNS Client Events

Here is a weird one that I just solved and wanted to pass along in case it may help someone else. I'm running AVG Antivirus paid version, but the free version would likely have the same problem. Windows 7 Pro. The problem also showed up on a brand new Windows 8 Pro box.

I had recently started getting a Windows System Log warning that said "Name resolution for the name update.avg.com timed out after none of the configured DNS servers responded". This was showing up as a "warning - DNS Client Events" with event ID 1014. The laptop was logging about half a dozen of the events a day. The laptop was working just fine otherwise, no problem with web browsing or email which made the DNS warning kind of puzzling. AVG also seemed to be working fine and would update OK when I did a manual update.

It turns out that AVG is doing something either odd or clever, depending on how you look at it, with their updates and DNS servers. They are using normally unused records in the DNS server entries to store the version number of the latest antivirus update. That way the AVG program only has to go to the DNS server to see if the AVG software and antivirus database updates are current, not back to AVG's servers. I had no idea it was possible to store anything in DNS records other than the name-to-IP information.

The problem happened because I recently upgraded to IPv4 + IPv6 dual stack ISP service. The cable modem and router being used is IPv6 capable and I've enabled both IPv4 and IPv6 in the Windows 7 networking panel. IPv6 has been working great at sites like ipv6.cnn.com and ipv6.google.com.

But it appears that IPv6 DNS records are not storing that additional program version information for AVG that the IPv4 DNS records did. Windows 7 will preferentially try IPv6 first and use that connection, then fail over to IPv4. The browser (firefox) works the same way and will use an IPv6 connection to a site preferentiallly first if available. So the error message happened with AVG update tried to get the version number info first from the IPv6 DNS servers, failed, then the OS tried again with the IPv4 servers and succeeded.

The solution to all this was to shut off the thing in AVG that tries to get the program version numbers from the DNS server records. Go to "Options" -> "Advanced Settings" -> "Update" and uncheck "Use DNS Update" under the "Additional update options" heading. This just forces the program to actually go back to AVG's own servers to check for updates, which is probably a good idea anyway so there is no a delay while that information propagates out to DNS servers.

My System SpecsSystem Spec
.

03 Jan 2013   #2

Microsoft Windows 7 Ultimate 64-bit
 
 

You should mark this thread as Solved. And fill in your specs; Piriform Speccy can help you with that.

Speccy - System Information - Free Download
My System SpecsSystem Spec
Reply

 Solved - AVG IPv6 DNS Name Resolution Timed Out - DNS Client Events




Thread Tools



Similar help and support threads for2: Solved - AVG IPv6 DNS Name Resolution Timed Out - DNS Client Events
Thread Forum
Error Message with regard to "DNS Client Events" EventID : 1012 Network & Sharing
3 things to know about IPv6 as World IPv6 Day approaches News
Voice Events instead of Sound Events Chillout Room
Event Log: DNS Client Events (1014) Network & Sharing
Timed out Browsers & Mail
DNS Client Events Network & Sharing
Boot Hang Solved; separately Sleep Problem Solved Performance & Maintenance

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 09:01 PM.
Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App
  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33