Turn Off Microsoft Security Essentials Real-Time Protection for 5x to 10x speed gain

dparish 4 months ago • updated by Martin 2 months ago 2

I found that by turning off the Microsoft Security Essentials (malware security monitor) when moving files from one archive to another, speeds up Teracopy about 5x to 10x in file transfer speed. A HUGE speed increase. Teracopy alone gives about another 3x improvement over explorer. So Security Essentials Real-time file checking  is the main bottleneck, and it can be turned off temporarily during copying files from archive to archive. Since the archives were already checked for malware, this approach is safe for moving large files in large archives. Once the archives are copied, then I turn it back on. It seems to me this could be at least a suggestion to the user before making a large copy (100G+) or possibly done automatically by Teracopy, then turned back on after the copy. It is a sweet trick and it works!


If a program is able to turn your antivirus off without user intervention, it should be considered very dangeruos, don't you think so?

If you turn you antivirus off for file copying and you keep working with your computer, for browsing, for an instance, it should be considered very dangerous, don't you think so?

Please, tell Microsoft to not doublecheck files that have already been checked, just by the simple event of copying them to another location. A smart antivirus should know when a clean marked file is being copied from one location to another, if common windows handlers are used. This leads me to a question: as TeraCopy is not a common windows handler (is a 3rd party one), how does the antivirus know that a virus is not being injected as it is being copied? Just by checking it when copied. Don't you think so?

If you do not agree with the simplest security methods, just disable them.

If you know what, when and why you are doing things, you do not need any reminders, as you should know already the risks of your actions.

👍 for the security advice. Besides,there's probably a way to exclude either TeraCopy from being monitored by Microsoft's Security Essentials.