If you want to know which security patches were installed on a Microsoft
Windows system within a specific time period, e.g., the last month or the
last 3 months, you can use a Get-CimInstance command in a
PowerShell window. E.g.:
PS C:\Users\Lila> Get-CimInstance -Class win32_quickfixengineering | Where-Object { $_.InstalledOn -gt (Get-Date).AddMonths(-1) } Source Description HotFixID InstalledBy InstalledOn ------ ----------- -------- ----------- ----------- Security Update KB4025376 NT AUTHORITY\SYSTEM 7/12/2017 12:00:00 AM Security Update KB4025342 NT AUTHORITY\SYSTEM 7/12/2017 12:00:00 AM PS C:\Users\Lila> Get-CimInstance -Class win32_quickfixengineering | Where-Object { $_.InstalledOn -gt (Get-Date).AddMonths(-3) } Source Description HotFixID InstalledBy InstalledOn ------ ----------- -------- ----------- ----------- Security Update KB4020821 NT AUTHORITY\SYSTEM 6/17/2017 12:00:00 AM Update KB4021572 NT AUTHORITY\SYSTEM 6/17/2017 12:00:00 AM Update KB4022405 NT AUTHORITY\SYSTEM 6/17/2017 12:00:00 AM Security Update KB4025376 NT AUTHORITY\SYSTEM 7/12/2017 12:00:00 AM Security Update KB4025342 NT AUTHORITY\SYSTEM 7/12/2017 12:00:00 AM PS C:\Users\Lila>
The number of months you want to look back is specified by putting a
negative number in the parentheses after AddMonths. E.g.,
-3 to view the patches installed in the last 3 months. Alternatively,
you can specify the number of days, instead of months, by substituting
AddDays for AddMonths. E.g., to view security
patches installed in the last 30 days:
PS C:\Users\Lila> Get-CimInstance -Class win32_quickfixengineering | Where-Object { $_.InstalledOn -gt (Get-Date).AddDays(-30) } Source Description HotFixID InstalledBy InstalledOn ------ ----------- -------- ----------- ----------- Security Update KB4025376 NT AUTHORITY\SYSTEM 7/12/2017 12:00:00 AM Security Update KB4025342 NT AUTHORITY\SYSTEM 7/12/2017 12:00:00 AM PS C:\Users\Lila>
Alternatively, you can use the Get-Hotfix cmdlet.
PS C:\Users\Lila> Get-Hotfix
Source Description HotFixID InstalledBy InstalledOn
------ ----------- -------- ----------- -----------
VALERIAN Security Update KB4020821 NT AUTHORITY\SYSTEM 6/17/2017 12:00:00 AM
VALERIAN Update KB4021572 NT AUTHORITY\SYSTEM 6/17/2017 12:00:00 AM
VALERIAN Update KB4022405 NT AUTHORITY\SYSTEM 6/17/2017 12:00:00 AM
VALERIAN Security Update KB4025376 NT AUTHORITY\SYSTEM 7/12/2017 12:00:00 AM
VALERIAN Security Update KB4025342 NT AUTHORITY\SYSTEM 7/12/2017 12:00:00 AM
PS C:\Users\Lila>References: