问Azure DevOps Powershell脚本无法创建SSL/TLS安全通道

EN

VERBOSE: 8:31:40 AM - Begin Operation: Get-AzureDeployment
VERBOSE: 8:31:42 AM - Completed Operation: Get-AzureDeployment
... some other info about the deployment in slot

VERBOSE: 9:53:39 AM - Begin Operation: Get-AzureDeployment
##[debug]Caught exception from task script.
##[debug]Error record:
##[debug]Get-AzureDeployment : An error occurred while sending the request.
##[debug]At D:\a\r1\a\_Tools\Powershell\cloud-service_swap-slot.ps1:14 char:15
##[debug]+ ... eployment = Get-AzureDeployment -Slot "Staging" -ServiceName $CloudSe ...
##[debug]+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
##[debug]    + CategoryInfo          : CloseError: (:) [Get-AzureDeployment], HttpRequestException
##[debug]    + FullyQualifiedErrorId : Microsoft.WindowsAzure.Commands.ServiceManagement.HostedServices.GetAzureDeploymentComma    nd
##[debug] 
##[debug]Script stack trace:
##[debug]at <ScriptBlock>, D:\a\r1\a\_Tools\Powershell\cloud-service_swap-slot.ps1: line 14
##[debug]at <ScriptBlock>, <No file>: line 1
##[debug]at <ScriptBlock>, D:\a\_tasks\AzurePowerShell_72a1931b-effb-4d2e-8fd8-f8472a07cb62\3.171.2\AzurePowerShell.ps1: line 145
##[debug]at <ScriptBlock>, D:\a\_tasks\AzurePowerShell_72a1931b-effb-4d2e-8fd8-f8472a07cb62\3.171.2\AzurePowerShell.ps1: line 141
##[debug]at <ScriptBlock>, <No file>: line 1
##[debug]at <ScriptBlock>, <No file>: line 22
##[debug]at <ScriptBlock>, <No file>: line 18
##[debug]at <ScriptBlock>, <No file>: line 1
##[debug]Exception:
##[debug]System.Net.Http.HttpRequestException: An error occurred while sending the request. ---> System.Net.WebException: The request was aborted: Could not create SSL/TLS secure channel.
##[debug]   at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
##[debug]   at System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar)
##[debug]   --- End of inner exception stack trace ---
##[debug]   at Microsoft.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
##[debug]   at Microsoft.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccess(Task task)
##[debug]   at Microsoft.WindowsAzure.Management.Compute.DeploymentOperationsExtensions.GetBySlot(IDeploymentOperations operations, String serviceName, DeploymentSlot deploymentSlot)
##[debug]   at Microsoft.WindowsAzure.Commands.Utilities.Common.ServiceManagementBaseCmdlet.ExecuteClientActionNewSM[TResult](Object input, String operationDescription, Func`1 action, Func`3 contextFactory)
##[error]An error occurred while sending the request.
##[debug]Processed: ##vso[task.logissue type=error]An error occurred while sending the request.
##[debug]Processed: ##vso[task.complete result=Failed]

##[debug]Added certificate to the certificate store.
##[command]Set-AzureSubscription -SubscriptionName PXX -SubscriptionId XXXXXX01-09f5-4703-bcc9-6ff914XXXXXX -Certificate ******** -Environment AzureCloud 
##[command]Select-AzureSubscription -SubscriptionId XXXXXX01-09f5-4703-bcc9-6ff914XXXXXX
##[debug]Leaving Initialize-Azure.
## Initializing Azure Complete 

steps:
- task: AzurePowerShell@3
  displayName: 'Swap slots'
  inputs:
    azureConnectionType: ConnectedServiceName
    azureClassicSubscription: 'PXX subscription'
    ScriptPath: '$(System.DefaultWorkingDirectory)/_Tools/Powershell/cloud-service_swap-slot.ps1'
    ScriptArguments: '-CloudServiceName $(CloudServiceName)'
    FailOnStandardError: true
    azurePowerShellVersion: LatestVersion

[CmdletBinding(PositionalBinding=$True)]
Param(
    [Parameter(Mandatory = $true)]
    [String]$CloudServiceName              # required
)

# Check if Windows Azure Powershell is avaiable 
if ((Get-Module -ListAvailable Azure) -eq $null) 
{ 
    throw "Windows Azure Powershell not found! Please install from http://www.windowsazure.com/en-us/downloads/#cmd-line-tools" 
} 
 
# VIP Swap
$Deployment = Get-AzureDeployment -Slot "Staging" -ServiceName $CloudServiceName #It's failing here
if ($Deployment -ne $null -AND $Deployment.DeploymentId  -ne $null) 
{ 
     Write-Output ("Current Status of staging in {0}" -f $CloudServiceName); 
     Write-Host ($Deployment | Select-Object -Property * -ExcludeProperty Configuration,RolesConfiguration | Format-List | Out-String);

     $MoveStatus = Move-AzureDeployment -ServiceName $CloudServiceName 
     Write-Output ("Vip swap of {0} status: {1}" -f $CloudServiceName, $MoveStatus.OperationStatus)     
}else 
{ 
     Write-Output ("There is no deployment in staging slot of {0} to swap." -f $CloudServiceName) 
} 

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12