PowerTip: Quickly Find System Updates via PowerShell


Summary: Use Windows PowerShell to identify updates applied to a computer system.

Hey, Scripting Guy! Question How can I find which updates are applied to my computer?

Hey, Scripting Guy! Answer 

Use the Get-Hotfix cmdlet. To find updates, use the Description parameter and specify Update:

Get-HotFix -Description Update

To find a specific hotfix by ID number, use the Id parameter:

Get-HotFix -id kb2741530 

Comments (8)

  1. Anonymous says:

    gwmi win32_quickfixengineering and Get-Hotfix do not return the InstalledOn date for all patches on my Windows 7 machine (up to date with patches, POSH 3).

    In contrast, the DOS command wmic qfe does return the InstalledOn date for all patches, so it looks like there is a bug in the way that POSH handles win32_quickfixengineering.

  2. jrv says:

    It is a wrapper around this:

    gwmi win32_quickfixengineering

    I is only for hotfixes for WIndows and Microsoft applications like Office that are serviced by WIndows Update or are installed via a KB.

    To see this run the following:

    Get-Hotfix|?{$_.description}|select description

  3. So this one let's you know where you're outdated? Does it also include Applications or is it just like Windiws Updater?

  4. Anonymous says:

    I wrote this script to parses key details from the "wmic qfe" command, so that I have the InstalledOn date for all items.

    # Use WMIC to get a list of installed patches

    $wmic = wmic qfe

    foreach ($line in $wmic) {

       # HotFix ID

       if ($line -match "bKB(d*)b") {

           $HotFixID = $Matches[0]

       }

       # InstalledOn

       if ($line -match "b(d{1,2})/(d{1,2})/(d{4})b") {

           $InstalledOn = $Matches[0]

       }

       # Description

       if ($line -match "b(Update|Security Update|Hotfix|Service Pack)") {

           $Description = $Matches[0]

       }

       $details = $HotFixID + "  " + $InstalledOn + "  " + $Description

       Write-Output $details

    }

  5. Ahmed Kamal says:

    Any way to "install" updates, not just see what was installed?

  6. vhfbgvjuk says:

    I found that get-hotfix -hfid kbxxxxx works better than -id

  7. David says:

    This doesn’t list office patches. I’ve been through dozens of pages trying to figure out how to list installed office patches. Why isn’t there an easy way in Powershell??

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