<#
Author: Gabe Kerntke
Date: 04-15-2024

.Synopsis

.Modified
2024-04-15 (GabeK) - Original script created

#>

#Region Variables
$URL = "scinstallcheck.mcafee.com"
$HostFileTest = Get-Content "C:\Windows\System32\drivers\etc\hosts" | Where-Object { $_ -like "*$URL*" } 
$HostFilePath = "C:\Windows\System32\drivers\etc\hosts"
$HostFile = Get-Content "C:\Windows\System32\drivers\etc\hosts"

#Region Script Start

#If the $URL exists in the host file it continues with the fix
If ($null -ne $HostFileTest) {
    #Makes copy of Host file before making changes
    Copy-Item $HostFilePath -Destination "C:\Windows\System32\drivers\etc\hosts - backup" -Force
    #Makes the change to the Host file
    $NewFile = $HostFile -replace "0.0.0.1", "#" -replace "scinstallcheck.mcafee.com", "#"

    Try {
        #Sees if the changes to the Host file can saved
        Set-Content -Value $NewFile -Path $HostFilePath -Force -ErrorAction Stop
    }

    catch {
        #If error occurs with saving new Host file, revert to backup Host file
        Copy-Item "C:\Windows\System32\drivers\etc\hosts - backup" -Destination $HostFilePath -Force
        Write-Host "Failed to modify host file, exiting script"
        Break
    }

    Write-Host "Host file has been modified"
    #Removes backup Host file
    Remove-Item "C:\Windows\System32\drivers\etc\hosts - backup"
}

Else {
    Write-Host "$URL does not exist in host file, exiting script."
}
#Region Script End