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I'm trying to write a script to make sure a certain hotfix is installed. On one of our test computers running Windows 8.1, get-hotfix returns an incomplete list of hotfixes:

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Yet there are tons of patches showing in the Programs and Features control panel:

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All of our other test machines, including others installed with Windows 8.0 and 8.1, work fine. Any idea why this is? How can I get a complete list of hotfixes from Powershell?

Edit: wmic qfe list only shows the same four hotfixes as get-hotfix as well.

  • Thanks @PJMahoney -- I tried those suggestions without luck. get-wmiobject -class win32_quickfixengineering shows the same results as get-hotfix. – a paid nerd Nov 18 '15 at 21:04
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I believe the Get-Hotfix commandlet leverages the Win32_QuickFixEngineering WMI class to list Windows Updates, but only returns updates supplied by Component Based Servicing (CBS). Updates supplied by the Microsoft Windows Installer (MSI) or the Windows update site are not returned by Get-Hotfix/Win32_QuickFixEngineering.

You can try using the Windows Update API through PowerShell like in the below example. Give this a shot and let us know if it shows the missing updates.

$Session = New-Object -ComObject Microsoft.Update.Session
$Searcher = $Session.CreateUpdateSearcher()
$Searcher.Search("IsInstalled=1").Updates | ft -a Date,Title

EDIT: To search through the results, you can use the Where-Object commandlet (or alias Where) and filter for a specific hotfix:

$Searcher.Search("IsInstalled=1").Updates | Where {$_.Title -like "*KB2760587*"} | ft date,title
  • Thanks @bentek! That does it. Since I'm pretty new to Powershell, would you mind also showing me a good way to query those results to find if a specific hotfix is included? – a paid nerd Nov 18 '15 at 21:09
  • Also, is this less compatible with older Windows versions than get-hotfix? – a paid nerd Nov 18 '15 at 21:40
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    Edited my answer to include a simple query for a specific hotfix. – bentek Nov 19 '15 at 13:36
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    It looks like I want to use $Searcher.Search("IsInstalled=1").Updates | ft -a Date,Title instead. – a paid nerd Nov 19 '15 at 20:35
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    FYI: See also: Microsoft Update Client Install History under social.technet.microsoft.com/wiki/contents/articles/… for a different version of this solution (for me the above failed, but it led me to this Technet link which worked). – JohnLBevan Nov 30 '16 at 14:02
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You need to use different ways to list the updates installed by different methods. like installed by wsus or configmgr

Take a look here

https://social.technet.microsoft.com/wiki/contents/articles/4197.how-to-list-all-of-the-windows-and-software-updates-applied-to-a-computer.aspx

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