Patriot Duck 2. Nov. 2012 um 20:59 Uhr
Virus problems
So my antivirus software is reporting a trojan virus originating from Steam. Now I can't seem to launch it. Any help?
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Jordanwts 2. Nov. 2012 um 21:11 Uhr 
What is your antivirus?
Can you add the Steam folder to exceptions in the antivirus?
You will have to go through your antivirus to get to Steam, if it is indeed stopping you from launching.
If you can't do anything, I suggest changing antivirus.
Patriot Duck 2. Nov. 2012 um 21:17 Uhr 
I don't think that the antivirus is at fault here, because it was working just fine until today.
Perhaps I should uninstall Steam and Reinstall it.
bbutler 2. Nov. 2012 um 21:28 Uhr 
If you are having the same problem as I am, then you are seeing something that the Kaspersky AntiVirus people flagged as a trojan. The type of virus is: Trojan.Win32.Agent.unnc.

It is appearing in the following files so far:

•Steam AppOverlay.dll Deleted: Trojan.Win32.Agent.unnc
•Steam vstdlib_s.dll Deleted: Trojan.Win32.Agent.unnn

I think these files are necessary for the steamui dll to function so that is why it won't run.

Repost if uninstalling and reinstalling works... Steam on my PC was working just fine as well when I left the house this afternoon. If it doesn't fix it then I think the folks at Valve might have to work it out. Obviously an automatic update to Steam wouldn't help because it isn't launching for us. :/

Side note: I attempted to repair Steam via the SteamInstall.msi off the website but apparently the Support.url file the Cabs.w1.cab file couldn't be located or was corrupted so the installation process ended prematurely due to that error.
Zuletzt bearbeitet von bbutler; 2. Nov. 2012 um 21:32 Uhr
Patriot Duck 2. Nov. 2012 um 21:31 Uhr 
That is the EXACT problem I have. I'll uninstall and reinstall tomorrow. It's getting late.
jaxsom_74 2. Nov. 2012 um 21:33 Uhr 
My AV is Kaspersky 2013. Steam gave me a minor update today sometime and discovered the trojan.win32.Agent.unnn. According to thier site they just dicovered this malware just after midnight on nov 3 2012. That's just a few hours ago.
I had to make sure my AV database was up to date, run a scan and was still finding a threat, so I uninstalled steam and rescanned and that seemed to do the trick.
bbutler 2. Nov. 2012 um 21:33 Uhr 
If you uninstall and reinstall Steam, do you have to reinstall the games you have installed too?
Patriot Duck 2. Nov. 2012 um 21:34 Uhr 
Thanks. If I have any more problems tomorrow then I'll just post again.
Patriot Duck 2. Nov. 2012 um 21:35 Uhr 
Ursprünglich geschrieben von bbutler:
If you uninstall and reinstall Steam, do you have to reinstall the games you have installed too?
I'm not sure.
bbutler 2. Nov. 2012 um 21:36 Uhr 
Ursprünglich geschrieben von Patriot Duck:
Ursprünglich geschrieben von bbutler:
If you uninstall and reinstall Steam, do you have to reinstall the games you have installed too?
I'm not sure.
Guess I'll find out...
Wilson 2. Nov. 2012 um 21:41 Uhr 
Showed up on Kaspersky for me too. I've submitted two false positive reports. I've added Steam to the exclusion folder until Kaspersky can get it sorted out :/ Steam/L4D2 works fine after adding to the exclusion list.
Crode 2. Nov. 2012 um 21:47 Uhr 
I just got this happen to me about 30 minutes ago. ZoneAlarm extreme. Trojan.Win32.Agent.unnn
Trojan.Win32.Agent.unnc
It was unable to delete them and quarantined them. Steam updates and the files are found again with virus.

Either its a false flag or steam is updating everyone with a trojan =)
Zuletzt bearbeitet von Crode; 2. Nov. 2012 um 21:49 Uhr
bbutler 2. Nov. 2012 um 21:50 Uhr 
Ursprünglich geschrieben von Crode:
I just got this happen to me about 30 minutes ago. ZoneAlarm extreme. Trojan.Win32.Agent.unnn
Trojan.Win32.Agent.unnc
It was unable to delete them and quarantined them. Steam updates and the files are found again with virus.

Either its a false flag or steam is updating everyone with a trojan =)
I'd really like to think that's not the case... :|
overocea 2. Nov. 2012 um 21:51 Uhr 
Same problem here with Kaspersky :/
Gaizek 2. Nov. 2012 um 21:52 Uhr 
Just talked to ZoneAlarm tech support, they use Kaspersky's database so any ZoneAlarm product is going to pick this up as well.
Crode 2. Nov. 2012 um 21:57 Uhr 
Anyone know if this was a steam update or a virus definition update that caused this?
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Geschrieben am: 2. Nov. 2012 um 20:59 Uhr
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