I was just doing a daily manual scan on my laptop and I need some help. I started the scan yesterday and there where no problems. However when I started a quick scan today whenever it gets to Checking for: SecurityRisk.FlushDNS it gets stuck there and has been for a while on the same number of files. Now when I tried to end the scan and restart it stated that Norton was not responding and to end the program. So I did and try to restart the scan but when I clicked the icon it did nothing so I restarted the laptop. I'm trying to scan again and the same thing happened. I really need some advice on what to do because this seems really suspicious to me! I did not go to any unstable websites and I did not get any alerts from Norton. I'm using my school network also. If anybody can help or give me some advice Please Help!!!!!! It will be greatly appreciated!
Same thing happened to me but I'm using Norton Internet Security 2012. Reinstalled Norton but to no avail. I am not using Norton DNS as this is a laptop and when I'm on the go, Norton DNS prevents me to access wifis such as McDonald the Cloud which require a login first before I can get online.
I have the same problem as ACS4500 on 7 PCs running Win 7 Pro / 32-bit and Norton 360 v6.2.1.5 except they're all using Norton ConnectSafe as Primary and Secondary DNS. Until today's live update quick-scan worked efficiently and only ever reprted small numbers of tracking cookies. After today's live update the quick scan hung on each PC with the potential threat being scrutinised showing as "SecurityRisk.FlushDNS". Quick Scan had to be terminated by Task Manager. On the next start of Quick Scan it failed during initialisation with a big red "Scan Error".
Falling back through recommended courses of action, the first step was a full scan in safe mode with networking (F8 during boot, before the "Windows" logo appears, choose to boot 'Safe Mode with Networking'). The full scan reported a clean system, no threats found. A reboot to normal Windows 7 and a re-run of Quick Scan and this time Quick Scan completed, no threats found.
Also today the PCs running XP-Pro/32 bit and Norton 360 v6.2.1.5 were live-updated and then quick scanned. No similar trouble occurred with our XP systems. The quick-scan 'glitch' was on all our Windows 7 / 360 v6.2.1.5 ones only.
I am also experiencing the same issue as the OP regarding the Quickscan becoming stuck while scanning for SecurityRisk.FlushDNS. Norton 360 is up to date as of this morning and all other scans and checks of the system turn up clean with no viruses etc or registry issues detected and this issue did not arise in prior quickscans performed on several of our systems in the last 3 days. This issue manifests on both Windows 7 and Vista machines and canceling the scan and then trying to run it again still produces the same error.
Update: Moments after I made this post the scan completed reporting the system is clean after being stuck on the SecurityRisk.FlushDNS for over 10 minutes. I think there might be a glitch in this def or something.
I have been informed Norton is aware of the situation and the work around they suggested is in Vineeth's post above. I have recontacted Norton and informed them of the additional info in your posts.
Thanks for the feedback. I'm sure Norton will post something when they have some more info. If you haven't could you click on the Me Too in the original post in this thread - Norton is tracking this information. Thanks
About a month ago I noticed that Quick Scan, instead of taking the usual 20 seconds or so, lasted over three minutes. Virtually all the time was taken up by a pause at 'SecurityRisk.Proxy.DNS
I was running 360 v5 at the time, so took the free upgrade to v6.2.1.5, to see if it would solve the proplem. It didn't.
Today, Qick Scan is stuck (20mins) at 'SecurityRisk.FlushDNS
Clicking the 'Stop' button brings up the 'Security Request' box. Clicking the 'Yes' button greys out the 'Pause' and 'Stop' buttons, and trying to shut the scanning screen down just brings up the 'Security Request box again. The only way out is to restart the computer.
I saw a similar forum entry to this, so cleared all cookies and tempory files from Firefox and Chrome, then cleaned out prefetch, then ran Live Update, then restarted. No luck. Help, please!
Just wondered if anyone can help me with this problem. As of today 20/6/12 A Quick Scan with Norton 360 which normally takes under 3 minutes now takes around an hour and seems to hang when it is looking for FlushDNS, which it does not find anyway. A full system scan, again would take around 45mins is now into its third hour and hanging whilst looking for the same item. Nothing new has been installed or downloaded. I am running an HP Laptop with Windows 7. Any ideas. Thanks in advance.
A quick scan for me took about 20 to 30 minutes and then a full would take about hour and even an hour and 1/2 in one case. I'm guessing that it may be some kind of glitch or something but I'm gonna take the advice that Vineeth and Dave_Coleman gave me and do that for now.
You can think of the DNS as a phonebook of the internet. Changing the DNS as directed above points you to Norton's "phonebook". People use our phonebook as an extra layer of protection because it blocks the user from known malicious websites.
Something broke in a recent definition so both Full Scan and Quick Scan get stuck at Checking for: Security.FlushDNS. This does not happen while using Norton's phonebook.
Thats good to know! I ran the IP address for scan A on the page and it seems like that's helping. Those are the ones that you provided in an earlier post. I was gonna run all 3 because I wasn't sure which ones to do but the one you provided seems to be helping for now.
Can't Norton pull that particular definition from service? That way people won't get any more Norton scans freezing. And it's not exactly "stuck" it just prolongs the scan.
And the problem seems to happen across all of Norton's product, not just Norton 360. I have Norton Internet Security 2012.