Removes a named GPO (and associated links) from multiple trusted domains

Remove-GPOAcrossTrustedDomains.ps1

# Define the GPO name and the domains
$gpoName = "GPO To Go"
$domains = @("domain1.local", "domain2.local", "anotherDomain.com")

foreach ($domain in $domains) {
    # Get the GPO
    $gpo = Get-GPO -Name $gpoName -Domain $domain -ErrorAction SilentlyContinue
    
    if ($gpo) {
        # Get all OUs in the domain
        $ous = Get-ADOrganizationalUnit -Filter * -SearchBase "DC=$($domain -replace '\.', ',DC=')"
        
        # Include the root of the domain
        $root = "DC=$($domain -replace '\.', ',DC=')"
        $targets = $ous.DistinguishedName + $root
        
        foreach ($target in $targets) {
            try {
                # Attempt to remove the link to the GPO with error suppression
                Remove-GPLink -Name $gpoName -Target $target -Domain $domain -ErrorAction Stop 2>$null
                Write-Output "Removed link to GPO '$gpoName' from '$target'."
            } catch {
                # Do nothing and continue the loop
            }
        }
        
        # Delete the GPO
        Remove-GPO -Guid $gpo.Id -Domain $domain
        Write-Output "Deleted GPO '$gpoName' from domain '$domain'."
    } else {
        Write-Output "GPO '$gpoName' does not exist in domain '$domain'."
    }
}