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Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: REDACTED on October 26, 2014, 10:34:53 AM

Title: False "Threat Detected"
Post by: REDACTED on October 26, 2014, 10:34:53 AM
I have a scheduled full scan run weekly on my Windows 7 system. On the last two or three occasions it has run, it has left the user interface open with the words "Threat Found", in red, showing. There has been nothing in the virus chest, and the Scan History shows "no virus found". Should I be concerned about this, or is it just a bug in Avast!?

Regards,

Bob
Title: Re: False "Threat Detected"
Post by: Eddy on October 26, 2014, 10:37:13 AM
Sounds to me that you are not using the latest version of avast.
There was indeed a bug, but that should have been solved now.
https://forum.avast.com/index.php?topic=157520.0

or

right click the avast ball near the clock and choose update > program update
Title: Re: False "Threat Detected"
Post by: REDACTED on October 26, 2014, 10:46:49 AM
OK, I've updated. I had autoupdate set and my definitions were updating regularly, so I assumed the program would do likewise. It always used to do so.
Thanks for the tip,

Regards,

Bob
Title: Re: False "Threat Detected"
Post by: Eddy on October 26, 2014, 11:37:21 AM
It should have updated the program automatically if you have that enabled,
but there are always those nasty computer Gremlins that can cause strange things to happen. ;)

If everything went well, the problem should be solved now.
If not, let us know.
Title: Re: False "Threat Detected"
Post by: Pondus on October 26, 2014, 11:41:38 AM
Update is spread over weeks to ease server load
if all 220 000 000 users updated at same time would be like a DDoS attack .....

Title: Re: False "Threat Detected"
Post by: REDACTED on October 29, 2014, 04:22:34 PM
I have the newest update and still am having the false "Threat Detected" as described by Galen. Had it with previous version also. Program version 2015.10.0.2206 Virus Def 141029-1
Title: Re: False "Threat Detected"
Post by: Pondus on October 29, 2014, 04:26:41 PM
I have the newest update and still am having the false "Threat Detected" as described by Galen. Had it with previous version also. Program version 2015.10.0.2206 Virus Def 141029-1
try a new clean install   

https://docs.google.com/document/d/1TCCX0R7AAF2WOxAMQ_kcun2nNnCPFAk2P4RBzFXSgds/edit?pli=1

https://forum.avast.com/index.php?topic=157520.0

Title: Re: False "Threat Detected"
Post by: REDACTED on October 29, 2014, 05:08:15 PM
I have a scheduled full scan run weekly on my Windows 7 system. On the last two or three occasions it has run, it has left the user interface open with the words "Threat Found",

It actually says "THREAT DETECTED", and even the very latest version does it (in my case on Windows 8.1).

Sometimes the UI pops open after a scan and does not say that, even though the option to open the UI after a scan is unchecked.  And sometimes it doesn't pop open at all.

It's a bug that's been in the product for a while now, and it's still in 2015.

If the message alarms you, just click the Scan history link at the bottom, scroll down, and see that no actual virus was detected.

-Noel
Title: Re: False "Threat Detected"
Post by: REDACTED on November 22, 2014, 07:37:21 PM
Still reporting "Threat Detected" after this morning's scan. Nothing in history. Bug still there.
Title: Re: False "Threat Detected"
Post by: Para-Noid on November 22, 2014, 07:41:27 PM
Could you provide a screenshot?
Is there a file path given?
Title: Re: False "Threat Detected"
Post by: REDACTED on November 23, 2014, 03:01:51 PM
Had this happen on three home PCs yesterday.......all W7 64bit latest.
I have Avast and MBAM scan every early morning (different times of course)
The Avast UI was expanded (of course I hate that and would like a minimized version).....and all three had "THREAT DETECTED".  If I click on RESULTS.....nothing comes up....go to History and the scan shows no threat detected and nothing in Quarantine.  So yesterday I ran FULL scan on all three along with another MBAM FULL scan....clean.

This morning I woke up and only one PC had this.

Very odd......since the "program" is not changing perhaps this is tied to a VBS update ?
I'll monitor over the coming days to see if repeats.
Title: Re: False "Threat Detected"
Post by: czanieckiadam on November 23, 2014, 04:27:10 PM
mam avast security,wykrywa mi zagrozenie z routera a mam tylko prywatnie ustawione,pokazuje ze wszystko ok,a po przeskanowaniu ze router jest zainfekowany-dlaczego?. Prosze o pomoc
Title: Re: False "Threat Detected"
Post by: REDACTED on November 24, 2014, 07:43:23 PM
What is going on?  I also got a false Threat Detected message.
Title: Re: False "Threat Detected"
Post by: Para-Noid on November 24, 2014, 08:21:27 PM
What is going on?  I also got a false Threat Detected message.

Would you please provide a screenshot?
When you open up the virus chest is there anything there?

There are a couple of ways to access the chest...
1) Create a shortcut in the GUI...GUI>right click on a tile> select on choice in the drop down menu.
2) GUI>Scan for viruses>lower right corner.
Title: Re: False "Threat Detected"
Post by: REDACTED on November 25, 2014, 03:01:37 PM
It's a bug that's been around a long time - around 5 months. 

It has to do with the UI popping open at the end of a scan.  Sometimes it says THREAT DETECTED when there is none, and sometimes not.  Sometimes the UI pops open and sometimes not.

At one point someone from Avast acknowledged it and said a fix would be made available, but none ever was.  That implies nothing good.

I've captured screenshots at various times, up to including a second by second description of what panels show when at the end of a scan.

https://forum.avast.com/index.php?topic=160036.msg1149723#msg1149723

More info, going back as far as June 2014:

https://forum.avast.com/index.php?topic=151496.msg1100468#msg1100468

I got a kick out of some folks making the ludicrous suggestion that people shouldn't do scans.

Para-Noid always seems to ask for screenshots for this one.   :P

https://forum.avast.com/index.php?topic=159482.msg1147428#msg1147428

-Noel
Title: Re: False "Threat Detected"
Post by: REDACTED on November 25, 2014, 04:06:51 PM
FYI, I get the same "Threat Detected" pop-up, but have always concluded that it's because Avast (2015) continually finds a file that it cannot scan (something in the boot record). It's a bug that doesn't do any harm, so I just ignore it.

The other bug in 2015 is that if you use Chrome and have EVER had an extension named "Plugins for Google Chrome", it continually (on boot-up) tells me it's malware and do I want Avast to remove it. If I tell it 'yes', it churns for a full 1.5 minutes, and at the end says it failed to remove the item. When I check my extensions, it's not there. Hasn't been there for well over a month, but I still get the message on boot-up.

Incidentally, I never installed that extension. Don't know what it is or where it came from; it just appeared one day over a month ago.   
Title: Re: False "Threat Detected"
Post by: REDACTED on November 25, 2014, 05:22:35 PM
I get the combo (on scheduled scans at night when I'm asleep)......of Avast UI on desktop with no threat, Avast UI on desktop with threat (but clean history of scan), no UI pop.  There is no rhyme or reason.......the above scernarios are random.....I have multiple PCs in the house and they all do different things each day.  So, my early morning routine is to go to each one and check the Virus Scan history.
Title: Re: False "Threat Detected"
Post by: REDACTED on November 27, 2014, 12:31:20 AM
Sometimes the UI pops open after a scan and does not say that, even though the option to open the UI after a scan is unchecked. 

Where is this check box ?
Title: Re: False "Threat Detected"
Post by: REDACTED on November 28, 2014, 03:26:26 PM
Sometimes the UI pops open after a scan and does not say that, even though the option to open the UI after a scan is unchecked. 

Where is this check box ?
Settings > General