Modify Windows Support Phone Number with PowerShell

By Patrick Gruenauer on 3. September 2026 • ( Leave a comment )

With PowerShell, we can do almost anything. Among other things, we can use the Windows Registry to customize graphical elements, such as changing the support phone number displayed in the Control Panel. In this blog post, I will show how to modify the support number and also demonstrate a few additional examples.

Let’s dive in.

You already know that we can access the Windows Registry using PowerShell drives. This feature allows us to configure almost anything on Windows systems.

Below is the PowerShell code used to set or change the support number shown in PC Info.

$regPath = "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\OEMInformation"
$phoneNumber = "0800-1234567"

If (-Not (Test-Path $regPath)) {
    New-Item -Path $regPath -Force | Out-Null
}
Set-ItemProperty -Path $regPath -Name "SupportPhone" -Value $phoneNumber

So, what will happen when you run this code?

Mission accomplished.

Here are a few additional examples of how to add entries to PC Info.

Set-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\OEMInformation" -Name "Manufacturer" -Value "My Company"
Set-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\OEMInformation" -Name "Model" -Value "Workstation 2026"
Set-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\OEMInformation" -Name "SupportURL" -Value "https://support.example.com"
Set-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\OEMInformation" -Name "SupportPhone" -Value "+43 123 456789"
Set-ItemProperty -Path "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\OEMInformation" -Name "SupportHours" -Value "Mo-Fr 08:00-17:00"