May 22, 2017

How to Install MS17-010 (KB4012212) Security Update on Windows 7

The world is now facing the biggest cyberattack known as the WannaCry ransomware. The WannaCry Ransomware has affected more than 2,00,000 computers worldwide. The WannaCry ransomware targets the computers running the outdated Microsoft Windows operating systems like the Windows XP, Windows Server 2003, Windows 7/8. After getting in a computer this malware first tries to connect to a domain name which is hard coded in its source code. If the domain name is not found then it encrypts the entire hard drive and asks for ransom from the victims. This domain name actually acted as a kill switch and was discovered and registered by Marcus Hutchins of malwaretech. This kill switch greatly reduced the spread of this malware.

Before the WannaCry cyberattack, Microsoft patched the vulnerability in its Windows 10 OS by releasing a critical software update known as MS17-010 in March 2017. At that time MS17-010 was not released for other Windows OS'. After the WannaCry ransomware attack, Microsoft aggressively released security updates for all its Windows operating systems including the Windows XP whose support was ended by Microsoft in April 2014.

The MS17-010 is your computer's first defense to prevent the WannaCry ransomware attack. If you haven't installed this security update then find this post useful as we are going to teach you how to install this patch either via Windows update or standalone update package.

How to Install MS17-010 (KB4012212) Security Update on Windows 7



  • Download the MS17-010 (KB4012212) update package 32-bit | 64-bit
  • Download the update package according to the operating system you are using, that is 32-bit or 64-bit.
  • After downloading the update package, double click it to open an install.
  • Installation may take few minutes.
  • Restart your computer after installation.
  • To verify the update go to 'Control panel>Windows update'. Click 'Installed Updates' and look for 'KB4012212'. If it is listed then MS17-010 has been successfully installed.

Now after installing the security patch update make sure to scan your PC with a good antivirus. We suggest you buy Avast Internet Security 2017 because it detects, blocks and remove all malware strains of WannaCry ransomware including WNCRY, WCRY and Wana Decryptor 2.0. If you are still using Windows defender then I must tell you that Windows defender is unable to defend your computer against WannaCry. You can install Avast Internet Security 2017 which comes with a 30-day trial. Avast is the only antivirus which provides the highest security against WannaCry and DoublePulsar. Below you can find a screenshot in which Avast antivirus blocked the WannaCry virus.

avast wanacry


Download Avast Internet Security 2017

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