Write-Host "Running System File Checker (sfc /scannow)"
$DefaultProcessParam = @{
    'Wait'         = $true
    'ErrorAction'  = 'Stop'
}
$ProcessParam = @{
    'FilePath'     = 'sfc'
    'ArgumentList' = '/scannow'
}
Start-Process @ProcessParam @DefaultProcessParam
Write-Host 'Stopping ConfigManager service if it exists'
Stop-Service -Force 'ccmexec' -ErrorAction 'SilentlyContinue'
Write-Host 'Stopping Windows Management Instrumentation service'
Stop-Service -Force 'winmgmt'
Write-Host 'Temporarily disabling Windows Management Instrumentation service'
Set-Service -Name 'winmgmt' -StartupType 'Disabled'
Write-Host 'Determining system architecture'
if ([System.Environment]::Is64BitOperatingSystem) {
    $WbemBinaries = @(
        "$($env:SystemRoot)\System32\wbem\unsecapp.exe"
        "$($env:SystemRoot)\System32\wbem\WMIADAP.exe"
        "$($env:SystemRoot)\System32\wbem\WMIApSrv.exe"
        "$($env:SystemRoot)\System32\wbem\WmiPrvSE.exe"
        "$($env:SystemRoot)\System32\wbem\scrcons.exe"
        "$($env:SystemRoot)\SysWOW64\wbem\WMIADAP.exe"
        "$($env:SystemRoot)\SysWOW64\wbem\WmiPrvSE.exe"
    )
    $WbemPaths = @(
        "$($env:SystemRoot)\System32\wbem"
        "$($env:SystemRoot)\SysWOW64\wbem"
    )
}
else {
    $WbemBinaries = @(
        "$($env:SystemRoot)\System32\wbem\unsecapp.exe"
        "$($env:SystemRoot)\System32\wbem\WMIADAP.exe"
        "$($env:SystemRoot)\System32\wbem\WMIApSrv.exe"
        "$($env:SystemRoot)\System32\wbem\WmiPrvSE.exe"
        "$($env:SystemRoot)\System32\wbem\scrcons.exe"
    )
    $WbemPaths = @(
        "$($env:SystemRoot)\System32\wbem"
    )
}
Write-Host "Registering WBEM DLLs"
foreach ($WbemPath in $WbemPaths){
    $WmiObjects = Get-ChildItem -Path "$WbemPath\*" -Include '*.dll'
    foreach ($WmiObject in $WmiObjects) {
        Write-Host " Registering WBEM DLL $($WmiObject.FullName)"
        $ProcessParam = @{
            'FilePath'     = 'regsvr32'
            'ArgumentList' = "/s `"$($WmiObject.FullName)`""
        }
        Start-Process @ProcessParam @DefaultProcessParam
    }
}
Write-Host "Registering WBEM EXEs"
foreach ($WbemBinary in $WbemBinaries) {
    if (Test-Path -Path "$WbemPath\$WbemBinary") {
        $CurrentBin = Get-Item -Path "$WbemPath\$WbemBinary"
        Write-Host " Registering $WbemBinary"
        $ProcessParam = @{
            'FilePath'     = $CurrentBin.FullName
            'ArgumentList' = '/RegServer'
        }
        Start-Process @ProcessParam @DefaultProcessParam
    }
    else {
        Write-Warning "File $WbemBinary not found in $WbemPath!"
    }
}
Write-Host "Registering WMI Managed Objects"
$FileExtensions = @(
    '*.mof'
    '*.mfl'
)
foreach ($WbemPath in $WbemPaths){
    $WbemDlls = Get-ChildItem -Path "$WbemPath\*" -Include $FileExtensions
    foreach ($WbemDll in $WbemDlls) {
        Write-Host " Registering WBEM DLL $($WbemDll.FullName)"
        $ProcessParam = @{
            'FilePath'     = "$WbemPath\mofcomp.exe"
            'ArgumentList' = $WbemDll.FullName
        }
        Start-Process @ProcessParam @DefaultProcessParam
    }
}
Write-Host "Resetting Repository"
$ProcessParam = @{
    'FilePath'     = "$($env:SystemRoot)\System32\wbem\winmgmt.exe"
    'ArgumentList' = '/resetrepository'
}
Start-Process @ProcessParam @DefaultProcessParam
Write-Host "Salvaging Repository"
$ProcessParam = @{
    'FilePath'     = "$($env:SystemRoot)\System32\wbem\winmgmt.exe"
    'ArgumentList' = '/salvagerepository'
}
Start-Process @ProcessParam @DefaultProcessParam
Write-Host 'Setting Windows Management Instrumentation service back to Automatic'
Set-Service -Name 'winmgmt' -StartupType 'Automatic'
Write-Host 'Starting Windows Management Instrumentation service'
Start-Service -Force winmgmt
Write-Host 'Starting ConfigManager service if it exists'
Start-Service -Force ccmexec -ErrorAction SilentlyContinue