bit-tech.net

AVG bug leaves Windows unbootable

AVG bug leaves Windows unbootable

The popular AVG anti-virus has caused heartache for users of certain language editions of Windows by marking a system file as a Trojan.

Another day, another bug in an anti-virus product: this time it's AVG's turn to cause some heartache the world over.

CNet has announced that Grisoft's AVG 8 anti-virus product received an update on Tuesday which caused it to detect an important Windows system file as a virus, giving users an option to delete the file – and hose their systems.

Affecting users of AVG 8 on Dutch, French, Italian, Portuguese, and Spanish editions of Windows XP – both Home and Professional – the bug causes AVG to detect user32.dll as a Trojan horse, leaving users open to the possibility of deleting or quarantining a file which Windows requires for continued operation.

The company has issued a statement saying that it is “actively working to remedy the problem some users are experiencing related to the most recent update to commercial and free versions of AVG 7.5 and AVG 8.0 in some languages.” As of last night, a bootable CD image was released which is designed to repair a system that has been rendered unbootable by the bug – although you'll need a second computer to burn the CD on, obviously – along with a new virus definition update which removes the false positive. For users that don't have a second machine on which to download the fix, Grisoft recommends that they “contact their AVG reseller or ask a friend to download the information and fix tool for them.

Is this evidence that the entire concept of a signature-based anti-virus package is flawed, or does Grisoft just need to improve their QA testing procedures? Share your thoughts over in the forums.

22 Comments

Discuss in the forums Reply
kiwik 12th November 2008, 13:17 Quote
I had to repair a laptop that had this exact file removed this weekend...
proxess 12th November 2008, 13:35 Quote
Anti-Virus? Thats an OS-specific kind of software, right? *sarcasm*
Paradigm Shifter 12th November 2008, 13:48 Quote
AVG8 is, in my experience, crap. It's slower than 7.5, nags about getting this, that or the other program from Grisoft constantly with it's 'notifications'... has a fit if it can't find an internet connection and reports that the program is broken. All sorts of fun times to be had. It's given me false positives several times on files ranging from notepad.exe to game executables (the legit ones - interestingly it never flags up no-CD .exe files).

This news just gives me another reason not to use AVG ever again.
LeMaltor 12th November 2008, 15:42 Quote
Quote:
Originally Posted by kiwik
I had to repair a laptop that had this exact file removed this weekend...

Your sentence makes no sense?
Vigfus 12th November 2008, 15:46 Quote
Quote:
Originally Posted by LeMaltor
Your sentence makes no sense?
It makes pefect sense and you use the questionmark erroneously. :p
Squallers 12th November 2008, 16:01 Quote
^ ^
I heartily concur
LeMaltor 12th November 2008, 16:02 Quote
Quote:
Originally Posted by Vigfus
Quote:
Originally Posted by LeMaltor
Your sentence makes no sense?
It makes pefect sense and you use the questionmark erroneously. :p

ya v funny, serusoly tho had/have this/last?!
MrWillyWonka 12th November 2008, 16:07 Quote
Quote:
For users that don't have a second machine on which to download the fix, Grisoft recommends that they “contact their AVG reseller or ask a friend to download the information and fix tool for them.”

And what about people who only have one computer and hence cannot access the Internet at all? They would not have a clue what would be happening and could potentially fork out a fortune to pay someone to fix it, would they be reimbursed?

My point is, should a software company pay for damages on any computer they break and hence cost the user money? Saying that, if that was the case MS would be broke!
LeMaltor 12th November 2008, 16:12 Quote
Quote:
Originally Posted by MrWillyWonka
Quote:
For users that don't have a second machine on which to download the fix, Grisoft recommends that they “contact their AVG reseller or ask a friend to download the information and fix tool for them.”

And what about people who only have one computer and hence cannot access the Internet at all? They would not have a clue what would be happening and could potentially fork out a fortune to pay someone to fix it, would they be reimbursed?

My point is, should a software company pay for damages on any computer they break and hence cost the user money? Saying that, if that was the case MS would be broke!

It's probably in the agreement you agree too when installing that if the software breaks your computer, it isn't the software companies fault.
Kúsař 12th November 2008, 19:45 Quote
Quote:
Originally Posted by kiwik
I had to repair a laptop that had this exact file removed this *weekend*...

"...that Grisoft's AVG 8 anti-virus product received an update on *Tuesday*..."

If *that* tuesday was yesterday :)
yodasarmpit 12th November 2008, 19:55 Quote
Quote:
Originally Posted by LeMaltor
ya v funny, serusoly tho had/have this/last?!
No need to be so pedantic.
lewchenko 12th November 2008, 21:46 Quote
I have AVG on 3 machines at home.. thankfully I turned off daily scanning and only scan once a blue moon. My lack of anti viral pro-activeness saved me from this 'anti virus - virus !' LOL!
Lazarus Dark 12th November 2008, 23:45 Quote
I hear non stop complaints about AVG incompatibilities/stability issues/etc. Why do people still use it? I've been on Avast for several years and never the slightest problem ever.
DLoney 13th November 2008, 03:03 Quote
I've Switched to Comodo's Internet Security App, and couldn't be happier.
Looks like I made the switch at the right time too...

http://www.personalfirewall.comodo.com/index.html
leexgx 13th November 2008, 03:36 Quote
the dayily Full scan should be turnd off at best its going to brake your hard disk from Over uses + every day its set to do an scan on boot up (after 12:00 i think) so pc turns into an Slow pc for 30 mins or so (depending on how many iles you have)

if the virus is on your pc in the first place its Very unlikey its going to be able to remove it if the real time scnner did not pick it up
notatoad 13th November 2008, 04:10 Quote
Quote:
Originally Posted by proxess
Anti-Virus? Thats an OS-specific kind of software, right? *sarcasm*

no, it's a user-specific kind of software. i find it just as irrelevant on windows as on linux.
Cheapskate 13th November 2008, 04:12 Quote
I stayed on V. 7.5 because 8 is a bloated b*tch. Why do companies insist on upgrading an app until it no longer runs? (I'M LOOKING AT YOU, NORTON!!!)
PhenomRed 13th November 2008, 05:21 Quote
I installed AVG on my computer at work, and since then its lagged as hell
talladega 13th November 2008, 05:48 Quote
That really sucks.

A while back Kaspersky had an update and after it you needed to restart, but on 64bit versions of Vista there was a problem and you couldn't start windows. It would BSOD as soon as you logged in. Had to start in safe mode and disable/uninstall Kaspersky. Luckily just a few hours later they released a fix for it though. :) That was very scary though.
Gareth Halfacree 14th November 2008, 06:40 Quote
AVG has e-mailed in the following:
Quote:
Originally Posted by AVG
AVG ANNOUNCES FREE ONE-YEAR LICENSE OR LICENSE EXTENSION OFFER FOR USERS
AFFECTED BY FAULTY UPDATE



Amsterdam, The Netherlands, November 13th 2008 - As a follow-up to the rapid
distribution of recovery instructions and repair CDs, AVG Technologies is
offering all affected users a free license or license extension as follows:



* For affected users of commercial AVG 7.5 products, a one-year
license for the equivalent AVG 8.0 product



* For affected users of commercial AVG 8.0 products, a free license
extension for one year



* For affected users of AVG Free products, a free one-year license for
AVG Anti-Virus 8.0



Beginning the week of November 24th, 2008, AVG Technologies will contact
affected customers and advise them on how they may obtain their
complimentary license or license extension.



AVG Technologies apologizes again for the inconvenience caused to our
customers and wishes to assure our users worldwide that the company is
actively putting new processes in place to avoid similar occurrences in the
future.

In case you're as confused as I am how a "free one-year license" is supposed to compensate users who are already on the free edition: the licence is for the commercial version, basically giving free users a no-cost upgrade to the paid-for version for a year.
kenco_uk 14th November 2008, 10:33 Quote
I use it but have the daily scan switched off. I think the fact I try not to d/l anything suspicious has meant my files have stayed virus-free.
Lou Chenou 17th November 2008, 23:27 Quote
I had to work with this system every day. Reinstalling it has lost all my data.
Three days after this bug, Avg has published on its site a method of repair. How know this, if your system is down ?? WHY consult its site ignoring that Anti virus AVG was the cause of the non rebooting ? with which PC if it is down ? !
Consequently, I ask AVG to offer me an exterior hard disk to put data backups nowadays...
Log in

You are not logged in, please login with your forum account below. If you don't already have an account please register to start contributing.



Discuss in the forums