Why not able to download using powershell?

Referring to following code, when I directly paste url into browser, I can download file, but when I run following code, it gets error and I would like to know on what wrong it is.

Does anyone have any suggestions?
Thanks in advance for any suggestions

$clnt = new-object System.Net.WebClient
	$url = "https://rbwm-api.hsbc.com.hk/digital-pws-tools-mpf-eapi-prod-proxy/v1/mpf/unit-prices/download/HSBCTRUSTPLUS?fund=APF&startDate=2018-10-17&endDate=2019-07-22&locale=zh_HK"
	$file = "D:\Folder\ABC.xls"
	try {
		$request = [System.Net.WebRequest]::Create($url)
		$request.Method = 'HEAD'
		$response = $request.GetResponse()
		$httpStatus = $response.StatusCode
		$urlIsValid = ($httpStatus -eq 'OK')
		$tryError = $null
		$response.Close()
		$clnt.DownloadFile($url,$file)
		# leave the loop if successfull
	}
	catch [System.Exception] {
		$httpStatus = $null
		$tryError = $_.Exception
		$urlIsValid = $false;
		Write-Host "Error" 
	}

I just tried below code and it’s working.
[pre]
add-type @"
using System.Net;
using System.Security.Cryptography.X509Certificates;
public class TrustAllCertsPolicy : ICertificatePolicy {
public bool CheckValidationResult(
ServicePoint srvPoint, X509Certificate certificate,
WebRequest request, int certificateProblem) {
return true;
}
}
"@
[System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertsPolicy
[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]‘Ssl3,Tls,Tls11,Tls12’

$url = “https://rbwm-api.hsbc.com.hk/digital-pws-tools-mpf-eapi-prod-proxy/v1/mpf/unit-prices/download/HSBCTRUSTPLUS?fund=APF&startDate=2018-10-17&endDate=2019-07-22&locale=zh_HK
$file = “C:\Temp\ABC.xls”
$IE = New-Object System.Net.WebClient
$IE.DownloadFile($url,$file)
[/pre]

This should work for you as well.

$Webpkg = "$env:USERPROFILE\Documents"
$webclient = New-Object System.Net.WebClient
$url = "https://rbwm-api.hsbc.com.hk/digital-pws-tools-mpf-eapi-prod-proxy/v1/mpf/unit-prices/download/HSBCTRUSTPLUS?fund=APF&startDate=2018-10-17&endDate=2019-07-22&locale=zh_HK"
$file = "$Webpkg\ABC.xls"
$webclient.DownloadFile($url,$file)

 

 

Thanks, to everyone very much for suggestions (^v^)