Server 2025 Domain Controller Not on Domain

<#
.Synopsis
  Find network adapters with NetworkCategory = Public and restart them.
  Run this a minute after each Server 2025 Domain Controller restart to get the DC back on the domain.
  This writes to the Application event log with Source "IT Script" and Event IDs 1100 - 1104.

  Copyright (c) 2025 by MCB Systems. All rights reserved.
  Free for personal or commercial use.  May not be sold.
  No warranties.  Use at your own risk.

.Notes 
    Name:       MCB.RestartPublicNetAdapters.ps1
    Author:     Mark Berry, MCB Systems
    Created:    03/19/2025
    Last Edit:  03/19/2025
    
    Changes:
#>

################################################################################
# Functions
################################################################################

# Function to write messages to both console and event log. 
function Write-Log {
    param (
        [string]$Message,
        [string]$Type = "Information", # Information, Warning, Error
        [int]$EventId = 0 # Default Event ID
    )

    # Prepend the name (not the full path) of the running script
    $Message = (Split-Path $PSCommandPath -Leaf) + ": " + $Message

    switch ($Type) {
        "Information" {
            Write-Host $Message
            Write-EventLog -LogName $EventLogName -Source $EventLogSource -EntryType Information -Message $Message -EventId $EventId
        }
        "Warning" {
            Write-Warning $Message
            Write-EventLog -LogName $EventLogName -Source $EventLogSource -EntryType Warning -Message $Message -EventId $EventId
        }
        "Error" {
            Write-Error $Message
            Write-EventLog -LogName $EventLogName -Source $EventLogSource -EntryType Error -Message $Message -EventId $EventId
        }
    }
}

################################################################################
# Setup
################################################################################

$EventLogName = "Application"
$EventLogSource = "IT Script"
$WaitSeconds = 30

# Check if the event source exists, create it if not
if (-not ([System.Diagnostics.EventLog]::SourceExists($EventLogSource))) {
    New-EventLog -LogName $EventLogName -Source $EventLogSource
}

#################################################################################
# Check for Public adapters and restart
################################################################################

# Get all network adapters with NetworkCategory "Public"
# The (@(...)) operator ensures that the result of the pipeline is always treated as an array, even if it contains only one element.
$PublicAdapters = @(Get-NetConnectionProfile | `
                    Where-Object {$_.NetworkCategory -eq "Public"} | `
                    ForEach-Object { Get-NetAdapter -InterfaceAlias $_.InterfaceAlias })

# Check if any public adapters were found
if ($PublicAdapters.Count -gt 0) {
    Write-Log "Found $($PublicAdapters.Count) Public network adapter(s). Will attempt restart to re-detect domain." -EventId 1100

    # Loop through each public adapter and restart it
    foreach ($Adapter in $PublicAdapters) {
        try {
            $NetworkCategory = (Get-NetConnectionProfile -InterfaceAlias $Adapter.Name).NetworkCategory # shoudl be Public, but re-confirm
            Write-Log "Restarting adapter: $($Adapter.Name), which is currently $NetworkCategory." -EventId 1101
            Restart-NetAdapter -Name $Adapter.Name -Confirm:$false
            Write-Log "Waiting $WaitSeconds seconds for Windows to identify the domain."
            Start-Sleep -Seconds $WaitSeconds
            $NetProfile = Get-NetConnectionProfile -InterfaceAlias $Adapter.Name
            $NetProfileName = $NetProfile.Name
            $NetworkCategory = $NetProfile.NetworkCategory
            if ($NetProfileName -eq "Identifying...") {
                Write-Log "Adapter $($Adapter.Name) restarted successfully. After waiting $WaitSeconds seconds, its Name still shows as $NetProfileName, so the NetworkCategory $NetworkCategory is not final." -EventId 1102
            } else {
                Write-Log "Adapter $($Adapter.Name) restarted successfully. Its Name is now $NetProfileName and its NetworkCategory is $NetworkCategory." -EventId 1103
            }
        }
        catch {
            Write-Log "Failed to restart adapter $($Adapter.Name): $($_.Exception.Message)" -Type Error -EventId 1104
        }
    }
} else {
    Write-Log "No Public network adapters found, so no adapters restarted." -EventId 1105
}