CLS

#------------------------------- 2016 Server -----------------------------------
# Set Counters for Loop for Each Month of the Year
# Run after Patch Tuesday
"----2016 Server ----" | Tee-Object 'C:\temp\Windows_Monthly_Rollups.txt'
$X=1
$MaxCounter=Get-Date -Format "MM"

Do{
    # Instnatiate Array
    $Lines=@()

    if($X -lt 10){
    # Get Webpage Data
        (Invoke-WebRequest -Uri "https://www.catalog.update.microsoft.com/Search.aspx?q=2025-0$x Cumulative Update for Windows Server 2016 for x64-based Systems").Content | Out-File C:\temp\2016-$X.txt
    }Else{
          (Invoke-WebRequest -Uri "https://www.catalog.update.microsoft.com/Search.aspx?q=2025-$x Cumulative Update for Windows Server 2016 for x64-based Systems").Content | Out-File C:\temp\2016-$X.txt  
    }

    #Export Data Out to File
    $Lines= Get-Content C:\temp\2016-$X.txt   

    #Loop Through Each File to Get KB Output
    Foreach($Line in $Lines){
        If($Line -like "*(KB*"){$Line.Trim() | Tee-Object 'C:\temp\Windows_Monthly_Rollups.txt' -Append}
    }

    #Incriment Counter
    $x=$X+1 
}While($x -le $MaxCounter)

#------------------------------- 2019 Server -----------------------------------
"----2019 Server ----" | Tee-Object 'C:\temp\Windows_Monthly_Rollups.txt' -Append
$X=1
Do{
    # Instnatiate Array
    $Lines=@()
    if($X -lt 10){
        # Get Webpage Data
        (Invoke-WebRequest -Uri "https://www.catalog.update.microsoft.com/Search.aspx?q=2025-0$x Cumulative Update for Windows Server 2019 for x64-based Systems").Content | Out-File C:\temp\2019-$X.txt
    }Else{
        (Invoke-WebRequest -Uri "https://www.catalog.update.microsoft.com/Search.aspx?q=2025-$x Cumulative Update for Windows Server 2019 for x64-based Systems").Content | Out-File C:\temp\2019-$X.txt
    }

    #Export Data Out to File
    $Lines= Get-Content C:\temp\2019-$X.txt  

    #Loop Through Each File to Get KB Output
    Foreach($Line in $Lines){
        If($Line -like "*(KB*"){$Line.Trim() | Tee-Object 'C:\temp\Windows_Monthly_Rollups.txt' -Append}
    }

    #Incriment Counter
    $x=$X+1    

}While($x -le $MaxCounter)

#------------------------------- 2022 Server -----------------------------------
"----2022 Server ----" | Tee-Object 'C:\temp\Windows_Monthly_Rollups.txt' -Append
$X=1
Do{
    # Instnatiate Array
    $Lines=@()
     if($X -lt 10){
        # Get Webpage Data   
        (Invoke-WebRequest -Uri "https://www.catalog.update.microsoft.com/Search.aspx?q=2025-0$X Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems").Content | Out-File C:\temp\2022-$X.txt
    }Else{
        # Get Webpage Data   
        (Invoke-WebRequest -Uri "https://www.catalog.update.microsoft.com/Search.aspx?q=2025-$X Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems").Content | Out-File C:\temp\2022-$X.txt
    }
    #Export Data Out to File
    $Lines= Get-Content C:\temp\2022-$X.txt   

    #Loop Through Each File to Get KB Output
    Foreach($Line in $Lines){
        If($Line -like "*(KB*"){$Line.Trim() | Tee-Object 'C:\temp\Windows_Monthly_Rollups.txt' -Append}
    }

    #Incriment Counter
    $x=$X+1 

}While($x -le $MaxCounter)


#------------------------------- 2025 Server -----------------------------------
"----2025 Server ----" | Tee-Object 'C:\temp\Windows_Monthly_Rollups.txt' -Append
$X=1
Do{
    # Instnatiate Array
    $Lines=@()
     if($X -lt 10){
        # Get Webpage Data   
        (Invoke-WebRequest -Uri "https://www.catalog.update.microsoft.com/Search.aspx?q=2025-0$X Cumulative Update for Microsoft server operating system version 24H2 for x64-based Systems").Content  | Out-File C:\temp\2025-$X.txt
    }Else{
        # Get Webpage Data   
        (Invoke-WebRequest -Uri "https://www.catalog.update.microsoft.com/Search.aspx?q=2025-$X Cumulative Update for Microsoft server operating system version 24H2 for x64-based Systems").Content  | Out-File C:\temp\2025-$X.txt  
    }

    #Export Data Out to File
    $Lines= Get-Content C:\temp\2025-$X.txt   

    #Loop Through Each File to Get KB Output
    Foreach($Line in $Lines){
        If($Line -like "*(KB*"){$Line.Trim() | Tee-Object 'C:\temp\Windows_Monthly_Rollups.txt' -Append}
    }

    #Incriment Counter
    $x=$X+1 

}While($x -le $MaxCounter)