for test automation of web application we often use Selenium. And if we want testing web application from chrome browser we need to download correct version of ChromeDriver. That means always if new version of chrome browser installed we need also update ChromeDriver and that is annoying.

This solution avoid to manually update ChromeDriver.

Lets suppose we have already install python3 in folder C:\Python\Python38 and its added on PATH.
We want have in the same folder file chromedriver.exe with the correct version.

so lets create file <autoUpdateChromeDriver.ps1>

$chromeDriverDir = "C:\Python\Python38\"
$chromeDriverFileLocation = $(Join-Path $chromeDriverDir "chromedriver.exe")
$chromeVersion = [System.Diagnostics.FileVersionInfo]::GetVersionInfo("C:\Program Files (x86)\Google\Chrome\Application\chrome.exe").FileVersion
$chromeMajorVersion = $chromeVersion.split(".")[0]

if (-Not (Test-Path $chromeDriverDir -PathType Container)) {
   New-Item -ItemType directory -Path $chromeDriverDir
}

if (Test-Path $chromeDriverFileLocation -PathType Leaf) {
  # get version of current chromedriver.exe
  $chromeDriverFileVersion = (& $chromeDriverFileLocation --version)
  $chromeDriverFileVersionHasMatch = $chromeDriverFileVersion -match "ChromeDriver (\d+\.\d+\.\d+(\.\d+)?)"
  $chromeDriverCurrentVersion = $matches[1]

  if (-Not $chromeDriverFileVersionHasMatch) {
    Exit
  }
}
else {
  # if chromedriver.exe not found, will download it
  $chromeDriverCurrentVersion = ''
}

if ($chromeMajorVersion -lt 73) {
  # for chrome versions < 73 will use chromedriver v2.46 (which supports chrome v71-73)
  $chromeDriverExpectedVersion = "2.46"
  $chromeDriverVersionUrl = "https://chromedriver.storage.googleapis.com/LATEST_RELEASE"
}
else {
  $chromeDriverExpectedVersion = $chromeVersion.split(".")[0..2] -join "."
  $chromeDriverVersionUrl = "https://chromedriver.storage.googleapis.com/LATEST_RELEASE_" + $chromeDriverExpectedVersion
}

$chromeDriverLatestVersion = Invoke-RestMethod -Uri $chromeDriverVersionUrl

Write-Output "chrome browser version:       $chromeVersion"
Write-Output "chromedriver version: $chromeDriverCurrentVersion"
Write-Output "chromedriver latest:  $chromeDriverLatestVersion"

$needUpdateChromeDriver = $chromeDriverCurrentVersion -ne $chromeDriverLatestVersion
if ($needUpdateChromeDriver) {
  $chromeDriverZipLink = "https://chromedriver.storage.googleapis.com/" + $chromeDriverLatestVersion + "/chromedriver_win32.zip"
  Write-Output "Will download $chromeDriverZipLink"

  $chromeDriverZipFileLocation = $(Join-Path $chromeDriverDir "chromedriver_win32.zip")

  Invoke-WebRequest -Uri $chromeDriverZipLink -OutFile $chromeDriverZipFileLocation
  Expand-Archive $chromeDriverZipFileLocation -DestinationPath $chromeDriverDir -Force
  Remove-Item -Path $chromeDriverZipFileLocation -Force
  $chromeDriverFileVersion = (& $chromeDriverFileLocation --version)
  Write-Output "chromedriver updated to version $chromeDriverFileVersion"
}
else {
  Write-Output "chromedriver is actual"
}

run PowerShell as administrator

run following to unable powerShell scripts

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned

and just run the script like

/<path-to-your-script/autoUpdateChromeDriver.ps1

now we should create new task in windows scheduler.
In PowerShell we go on with this commands.

$Action = New-ScheduledTaskAction -Execute 'powershell.exe' -Argument '-NonInteractive -NoLogo -NoProfile -File "C:\scripts\autoUpdateChromeDriver.ps1"'

$Trigger = New-ScheduledTaskTrigger -Daily -At 10am

$Settings = New-ScheduledTaskSettingsSet

$Task = New-ScheduledTask -Action $Action -Trigger $Trigger -Settings $Settings

Register-ScheduledTask -TaskName 'ChromeDriver-Autoupdate' -InputObject $Task -User 'MyUser' -Password 'MyPass'

for delete task, you can use

Unregister-ScheduledTask -TaskName 'ChromeDriver-Autoupdate'