Author Topic: Delete my important document  (Read 3859 times)

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Offline zmzt

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Delete my important document
« on: July 09, 2009, 07:22:49 AM »
My OS: Vista U
I installed a virtual machine(Virtual PC 2007) in my OS and this program created 2 new file named *.vhc and *.vmc.
What a pity!
  ??? ??? ???
Avast delete these files without any prompt tone!!!!!
So many important files in my Virtual machine!

Offline +AdDicT+

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Re: Delete my important document
« Reply #1 on: July 09, 2009, 02:54:50 PM »
How did avast delete a file without the "caution a virus has been detected!"?^^

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Offline DavidR

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Re: Delete my important document
« Reply #2 on: July 09, 2009, 04:27:57 PM »
avast doesn't delete or take action autonomously, it scans and alerts to infection and the user has to choose what action to take.

The only exceptions to that would be if you have the avast Pro version, and then you would have to set up what action you want to take on detection.

Having important files in a virtual environment is no different to having important files in a normal environment, if you don't want to loose them you have to back them up.
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Offline Lisandro

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Re: Delete my important document
« Reply #3 on: July 09, 2009, 04:30:37 PM »
Avast delete these files without any prompt tone!!!!!
No, avast does not take automated actions with the Home (free) version.

Edited: David was faster.
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Offline zmzt

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Re: Delete my important document
« Reply #4 on: July 09, 2009, 06:19:42 PM »
Thank you all and may be I clicked the wrong choise when the first "caution a virus has been detected" show.

Offline DavidR

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Re: Delete my important document
« Reply #5 on: July 09, 2009, 06:22:32 PM »
You're welcome.
Windows 10 Home 64bit/ Acer Aspire F15/ Intel Core i5 7200U 2.5GHz, 8GB DDR4 memory, 256GB SSD, 1TB HDD/ avast! free 21.8.2487 (build 21.8.6586.691) UI 1.0.666/ Firefox, uBlock Origin, uMatrix/ MailWasher Pro/ Avast! Mobile Security

Offline zmzt

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Re: Delete my important document
« Reply #6 on: July 10, 2009, 02:40:12 AM »
but I still have a question that why Avast! think the virtual machine file as a virus?
It just a big file.
My be the Avast team need to make some efforts to avoid the mistake.
If the file was infected by a virus, how can I repair it?

Offline DavidR

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Re: Delete my important document
« Reply #7 on: July 10, 2009, 03:44:13 AM »
The virtual file is somewhat large and complex and I guess it is possible that a string could match a signature. Many suggest that you exclude the virtual drive file from on-demand scans, which presumably was when this was detected ?

It is also possible that there might have been a virus in the virtual environment, the problem is that the actual image is one file when scanned by the on-demand scanner so it can't differentiate from a file within a virtual drive image.

You could add the following "*.vhc" and "*.vmc" (without the " quotes " ) to the avast Program Settings, Exclusions, Add, see image. That would exclude those file types the wildcard * means you don't have to name the file or folder or drive they are in.
Windows 10 Home 64bit/ Acer Aspire F15/ Intel Core i5 7200U 2.5GHz, 8GB DDR4 memory, 256GB SSD, 1TB HDD/ avast! free 21.8.2487 (build 21.8.6586.691) UI 1.0.666/ Firefox, uBlock Origin, uMatrix/ MailWasher Pro/ Avast! Mobile Security

Offline xiaochugang

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Re: Delete my important document
« Reply #8 on: July 10, 2009, 05:36:34 AM »
Avast delete those files which are infected by virus
check you VPC to make sure it is normal
I  think there is a big problem in you VPC ,not in Avast
 
forgive my poor English... ;D