How to do it...

The steps for the recipe are as follows:

1. Define and view the WSUS server URL using the properties returned from Get-WsusServer:

      $WSUSServer = Get-WsusServer
      $WSUSServerURL = "http{2}://{0}:{1}" -f `
                      $WSUSServer.Name, 
                      $WSUSServer.PortNumber,
                      ('','s')[$WSUSServer.UseSecureConnection]
      $WSUSServerURL
  

1. Create a Group Policy Object (GPO) and link it to your domain:

      $PolicyName = "WSUS Client"
       New-GPO -Name $PolicyName
       New-GPLink -Name $PolicyName -Target "DC=RESKIT,DC=Org"
  

1. Add registry key settings to the group policy to assign the WSUS server:

      $key = 'HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate\AU'
      Set-GPRegistryValue -Name $PolicyName ` 
                     -Key $key `
                     -ValueName 'UseWUServer'`
                     -Type DWORD -Value 1 
       $key = 'HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate\AU'
       Set-GPRegistryValue -Name $PolicyName `
                     -Key $key ` 
                     -ValueName 'AUOptions' `
                     -Type DWORD `
                     -Value 2 
       $key = 'HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate'
       Set-GPRegistryValue -Name $PolicyName `
                     -Key $key `
                     -ValueName 'WUServer' `
                     -Type String `
                     -Value $WSUSServerURL 
       $key = 'HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate'
       Set-GPRegistryValue -Name $PolicyName `
                     -Key $key `
                     -ValueName 'WUStatusServer' `
                     -Type String -Value $WSUSServerURL

1. Each PC on the domain then begins using the WSUS server once the group policy is updated. To make this happen immediately, on each PC, run the following commands:

      Gpupdate /force
      Wuauclt /detectnow