Wednesday, December 10, 2014

How effective are Microsoft Malicious Software Tool and Windows Defender? Why do they take so long to update?


I’ve noticed during Microsoft automatic updates on both Windows 7 and 8.1 that the Microsoft Malicious Software Removal Tool takes a very long time to install, typically about ten minutes, whereas most other updates are quick.  Windows Defender can also take time.
 
The WMRT is not a substitute for anti-virus software;  it is a “second opinion” that can remove malware only after the fact, and it’s only updated once a month.  Here’s a story about it on Computerworld by Michael Horowitz from 2009, link
  
There is also a module called Windows Defender, which Microsoft explains here
  
But Windows Defender seems to score poorly in “real world protection” compared to third-party products, according to Tablet PC review, here.

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