title: How to Detect windows update(or KB update) is installed or not using NSIS?
body: <p>To execute my windows application, windows machine needs some pre-installed windows update(Like KB2999226 - I need to check this update). I need to install this updates with my application installer silently using NSIS.</p>
  
  <p><strong>How to check windows has already installed particular update using NSIS.</strong></p>
  
  <p>I have tried this <a href="http://nsis.sourceforge.net/Windows_Critical_Updates_Mass_Installer" rel="nofollow noreferrer">NSIS-Windows_Critical_Updates_Mass_Installer</a> but its not working. It's not able to check pre-installed update.</p>
  
  <p>My windows application will run on Windows 7 SP1 and later version and windows server 2012 and later version. So i need to check updates in all this versions.</p>