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Although antivirus software can protect your Windows computer, you may need to scan your computer on demand. When a computer is running, there are several files that can be used by the system and therefore locked so that they are not accessible for virus scanning.
To avoid this, many users prefer to program a scan when starting the antivirus software to get the best results.
Under Windows 7 SP1, Windows Vista SP2, Windows Vista SP2, Windows Server 2008 SP2 or Windows Server 2008 R2 SP1, not all infected files are detected by your antivirus software.
This occurs when the antivirus software skips a few bytes when it reads the data or file using a stored file that is locked.
Microsoft has released a patch to fix this problem.
You can apply this patch, available at KB2698155, only to systems where the problem described in this article occurs.
Learn more about Microsoft’s recommendations for Windows files and folders that you can exclude from virus scanning.
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