Error Windows Update Installation via PowerShell Script using .msu files

Question

Hi,

I am trying to update windows using following script via .msu file but get following error, please help me to fix this issue.

Get-HotFix : A positional parameter cannot be found that accepts argument 'kb4562030.msu'.
At line:7 char:19

• if (Get-Hotfix <<<< -Id -eq $update) {
• CategoryInfo : InvalidArgument: (:) [Get-HotFix], ParameterBindingException
• FullyQualifiedErrorId : PositionalParameterNotFound,Microsoft.PowerShell.Commands.GetHotFixCommand

Get-HotFix : A positional parameter cannot be found that accepts argument 'kb978542.msu'.
At line:7 char:19

• if (Get-Hotfix <<<< -Id -eq $update) {
• CategoryInfo : InvalidArgument: (:) [Get-HotFix], ParameterBindingException
• FullyQualifiedErrorId : PositionalParameterNotFound,Microsoft.PowerShell.Commands.GetHotFixCommand

============================================================

PowerShell Script:

$UpdatePath = "C:\Updates"
Get-HotFix > "$UpdatePath\Old_HotFix_List.txt"
$Updates = Get-ChildItem -Path $UpdatePath | Where-Object {$_.Name -like "*.msu"}
ForEach ($update in $Updates)
{
$UpdateFilePath = $update.FullName
if (Get-Hotfix -Id -eq $update) {
Write-Host " Windows Update Already Installed on Computer "
}
else
{
write-host "Installing Update on Computer $update"
Start-Process -wait wusa -ArgumentList "/update $UpdateFilePath","/quiet","/norestart"
}
}
Get-HotFix > "$UpdatePath\New_HotFix_List.txt"
timeout 5
shutdown /r

Answer 1

I haven't run this code but I think it should do what you're trying to accomplish:

$UpdatePath = "C:\Updates"
Get-HotFix > "$UpdatePath\Old_HotFix_List.txt"  
$installed = (Get-HotFix).HotFixID
Get-ChildItem -Path $UpdatePath -Include *.msu | 
    ForEach-Object{
        if ($_.Name -match "^.+-(kb[^-]+)-"){   # name looks like "windows10.0-kb5003537-x86-ndp48_0f7a496cc7e0dc08f0494e8c9e3c6a83a9175e97.msu"
            $kbid = $matches[1]
            if ($installed -contains $kbid)
            {
                Write-Host "Windows Update '$kbid' Already Installed on Computer "
            }
            else{
                $UpdateFilePath = $_.FullName
                write-host "Installing Update '$kbid' on Computer $update"
                Start-Process -wait wusa -ArgumentList "/update $UpdateFilePath","/quiet","/norestart"
            }
        }
        else{
            Write-Host "Did not find KB number in the filename '$_'"
        }
    }
Get-HotFix > "$UpdatePath\New_HotFix_List.txt"
timeout 5
shutdown /r

Note that the variable "$update" (which should hold the name of the computer on which to run "wsua") is undefined. You should also check that "wsua" is sufficient to start the process.

Answer 2

Hi Rich,

now its working, but still have 01 issue as the if condition "Line No: 6 & 8" not working, the installation process starts didn't prompt any massage as mentioned in script if the update is already installed.