Find the Full Windows Build Number with PowerShell

Much to my surprise I discovered that the full build number for a Windows OS is not stored in WMI in the usual Win32_OperatingSystem class.

In Windows 10 at least, the full build number containing the “UBR”, or essentially the CU patch level of the build, is a useful piece of information.

Open Settings > System > About on a Windows 10 box, and you’ll find the OS Build value, in my case 15063.183

W10

If I run the usual WMI query to get the build number I just get 15063:

WMI

Same if I query the environment:

DotNet

To find the full number I have to query the registry in the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion branch.

So I put together a PowerShell script that can be used to get the Windows version for a local or remote computer (or group of computers) which includes the Edition, Version and full OS Build values.

Query the local system like this:


Get-WindowsVersion

Or query remote computers:


Get-WindowsVersion -ComputerName PC001


Get-WindowsVersion -ComputerName @("PC001","PC002","SRV001","SRV002")

Result:

result

The script

[CmdletBinding()]
Param
(
[Parameter(Mandatory=$false,
ValueFromPipelineByPropertyName=$true,
ValueFromPipeline=$true
)]
[string[]]$ComputerName = $env:COMPUTERNAME
)
Begin
{
$Table = New-Object System.Data.DataTable
$Table.Columns.AddRange(@("ComputerName","Windows Edition","Version","OS Build"))
}
Process
{
Foreach ($Computer in $ComputerName)
{
$Code = {
$ProductName = (Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion' Name ProductName).ProductName
Try
{
$Version = (Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion' Name ReleaseID ErrorAction Stop).ReleaseID
}
Catch
{
$Version = "N/A"
}
$CurrentBuild = (Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion' Name CurrentBuild).CurrentBuild
$UBR = (Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion' Name UBR).UBR
$OSVersion = $CurrentBuild + "." + $UBR
$TempTable = New-Object System.Data.DataTable
$TempTable.Columns.AddRange(@("ComputerName","Windows Edition","Version","OS Build"))
[void]$TempTable.Rows.Add($env:COMPUTERNAME,$ProductName,$Version,$OSVersion)
Return $TempTable
}
If ($Computer -eq $env:COMPUTERNAME)
{
$Result = Invoke-Command ScriptBlock $Code
[void]$Table.Rows.Add($Result.Computername,$Result.'Windows Edition',$Result.Version,$Result.'OS Build')
}
Else
{
Try
{
$Result = Invoke-Command ComputerName $Computer ScriptBlock $Code ErrorAction Stop
[void]$Table.Rows.Add($Result.Computername,$Result.'Windows Edition',$Result.Version,$Result.'OS Build')
}
Catch
{
$_
}
}
}
}
End
{
Return $Table
}