Boot Scan 0, Recovery Disk +900

Avast Free Antivirus / Premium Security
1

After my program and definitions where updated today I decided to test the Rescue Disk. It said it found +900 infected files do I want to delete?

OK, back into Windows 8.1 and run Boot Scan, no infected files found.
OK, back to do a Rescue Disk boot and +900 infected files. This time I would save the txt file, but chose :boot. searching the USB shows no relevant txt files, so I guess that was a mounted disk…

Program and virus definitions are:
2014.9.0.2018
140422-1

Who is right? More important is that last scan result on the USB somewhere?

2

What malware name (s) are given for the detected files…

Can you attach a screenshot of scan result

3

If the results of the Rescue Scan are on the Flash Drive then yes, if they are where?

4

Never used it, so have no idea…
You dont remeber any of the detection names?

5

Avast rescue disk http://www.avast.com/faq.php?article=AVKB114#artTitle

6

Tks, that FAQ helped…

Here is what I think is going on:

  • While Boot Scanning the screen fills up with ‘Locked Archive’ messages. Boot Scan does NOT consider those viruses
  • With the Rescue Disk, you get no feedback until the end when a txt file (attached below). Note no infected file list inside this txt. Only a count of Infected Files.
  • When you then choose ‘Fix Automatically’ Avast deletes your ‘Locked Archives’

One more thought, the 900+ instances where due to ‘File History’ running. My guess is that Avast during its normal scans tries to open these locked archives which ‘File History’ picks up to back them up again. With ‘File History’ backing up to a USB drive, Rescue Disk considers that a Hard Drive and wipes out all your backups of the locked archives…

7

you say " locked archives" …if you mean files that cant be scanned, read this

How do I handle files that avast! can’t scan? https://blog.avast.com/2014/02/28/how-do-i-handle-files-that-avast-cant-scan/

8

I understand which files these are and why they are locked, but that doesn’t change the issue that the ‘Rescue Disk’ shows an infected number and by using ‘Fix Automatically’ deletes them.

9

Similar issue here.
Created the Avast “Rescue Disc” on USB, from Avast IS on a Windows 10 clean system, and booted the pendrive to test it.
The result of the scan was:


AvastPE
=======

This file is just temporary. Save this report to another location if you would like to keep it.

Scan begin: 10:41:46 PM 8/29/2015


Infected files: 53504

Scanner result: 0

Scan end: 10:49:23 PM 8/29/2015

After closing scanlog.txt, the Avast window said “0 infected files”.

I clicked “Do it manually” and there was a list of files, mostly Microsoft, with no virus name.

10
Infected files: 53504

Scanner result: 0


Seems like txt bug … that should say

Scanned files: 53504

Infected result: 0

11

It says “Scanner result”, though, not “Scanned files”.

I tried on another PC, with Win Vista.

Infected files: 0

Scanner result: 0

In the following window it would give the number of “Scanned files” (lots of them).

12

Was this result before or after you removed your corrupted Avast installation ???

13

Good question, but I repeated the test (with same results) after I completely uninstalled the old Avast installation, installed it again and created a new Avast rescue pendrive.

By the way, like I said, it’s not just the weird thousands of “infected files” in the .txt result file, but even the “Delete and repair” window is populated with lots of Windows files, despite of the “0 infected” heading.

Anyone else with Windows 10 has ever tried running Avast “Rescue Disk”?

14

I’d like to know why it takes such a long time to download the toolkit ???

15

it looks like this old bug:

https://forum.avast.com/index.php?topic=164921.msg1226841#msg1226841