Hello. After install myAC (anticheat for CS) it runs first time is normally but each time after restart of computer myAC cannot to run and appears error "It is not possible to load the driver “acdev.sys”. I also added myAC in exceptions and turned of all monitors but all the same Avast blocks acdev.sys. After deinstalling of Avast the problem disappears.
How to solve this problem?
Please don’t provide a direct link to urls that may (or may not) contain viruses, just to be on the safe side.
Here’s the VirusTotal results
Interestingly enough, almost half of them came up as positive for being a virus of some sort, but almost every single one had a different result/virus type.
I have specified the reference on a official site of anticheat myAC.
Avast, Dr.Web, Kaspersky, Dr.Web do not find in it a virus but Avast blocks a driver of myAC.
Odd, avast! 5.0.594.0 and avast! 4.8.1351.0 didn’t were two of the 22 out of 43 that didn’t show a positive result on VirusTotal.
How to make that Avast did not block the specified driver?
Avast 5.0.677 and Avast 4.8.1368 are the current releases of Avast. That may well account for the difference in Avast’s detection on VirusTotal. With so many finding infections, I wouldn’t consider the file safe.
That’s why I felt it necessary to point out the avast! versions used by VirusTotal, I figured the difference was why it didn’t show as positive on the site.
I definitely agree that’s a possibility. I can’t find really any reliable source that verifies the safety* of myAC.exe.
*typo’d
So far you haven’t said what avast does, as it scans and alerts to infection not blocks. So if you are saying avast considers it infected, what is the malware name given by avast ?
If you can attach a cropped image of any avast alert ?
That will give us a better idea of the problem, see image examples of alerts below.
DavidR Avast not shows any alerts. It only blocks driver after loading windows.
That’s the problem, avast doesn’t block, it scans and alerts to infection, but it doesn’t block. If there is an apparent blocking, this is more likely to be conflict, normally associated with other security software or remnants left behind. So removing one side of any conflict would appear to resolve the problem, but it doesn’t identify the true culprit.
Have (or did) you another Anti-Virus installed in this system, if so what was it and how did you get rid of it ?
What other security based software do you have installed, anti-spyware, firewall, etc. ?
No, only Avast is installed.
After deinstalling of Avast the problem disappears.
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the question asks not just what you have installed but also previous AVs (as even uninstalled may leave remnants) ?
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That is what I said, conflict takes two, remove one no conflict, but it doesn’t give the true cause of the conflict.
There is a one way how to avoid this problem - to place myAC in autorun. And myAC will to run earlier than Avast but this way not in all cases works.