Error Opening [4]

Discussion in 'ESET Smart Security' started by encus, May 23, 2012.

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  1. encus

    encus Registered Member

    Hi Eset.

    Whenever I do on demand computer scan, I often gets these log entries of some Windows files with Error Opening [4] messages at the end.
    Is this normal? Does ESS scan these files? If not, would it become dangerous if one or more of these files were infected by malware?

  2. Janus

    Janus Registered Member

  3. encus

    encus Registered Member

  4. patch

    patch Registered Member

    Yes. You can look at older logs to see what files are usually not opened on your computer
    Not during the scan shown in the log. The same applies to all security software.
    Probably but hopefully ESET would detect it at some other point

    You are giving ESET one less opportunity to detect malware so must be reducing your protection. Probably will not matter but would only be sensible if the start-up scan was significantly impacting on your computer use.
  5. Janus

    Janus Registered Member

    Hey encus
    Here is what I think : We know that Real-time protection of the file system is activated at system startup (if you have it enable :) ), and that All files are scanned for malicious code at the moment they are opened or created or run on your computer. So my point is that the Real time protection is protecting you when you doing a startup and shutdown of the system. And "Startup scan" is another layere to the Real time protection, that checks registry entries for known ,and new malware, (when virus database is updated).
    As pointed out by "patch", Startup scan is a essential part of your protection, and is unwise to have it disabled, for a longer time.
  6. toxinon12345

    toxinon12345 Registered Member

    "System startup file check" scans for missed threats installed in the startup zones including the Operating memory.
    That scan is performed ~2 minutes after update/user logon
    Last edited: May 25, 2012
  7. encus

    encus Registered Member

    If I disable the start up scan (from the Scheduler option), is the Real Time Protection still on?
  8. Janus

    Janus Registered Member

    Yes, the real time protection will still be active if you turn off startup scan. But please notice as stated above, it is not wise to do so. .
  9. encus

    encus Registered Member

    Ok, thanks Janus. The reason I did that is to make my computer faster.
  10. Marcos

    Marcos Eset Staff Account

    I wouldn't disable startup scans at all as they may discover malware immediately after an update and not just after the next computer restart when files are loaded into memory.
  11. encus

    encus Registered Member

    Ok, I've just enabled back the startup scan. There are 2 items related to this :
    1. Automatic startup file check when user logon
    2. Automatic startup file check at successful virus signature update.
    I've chosen number 1 because as far as I can remember, it was checked when I installed ESS for the first time as a default setting (correct me if I'm wrong please).
    Then I've noticed that the 2 items above will not be performed if the computer is running on battery. The problem now is that not everyone is using desktop PC, some are using laptop and in order to let ESS do the startup scan, user has to charge his/her laptop before turning it on. It's kind of not an effective thing for me.

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