Set-SslCertificateValidation

Set-SslCertificateValidation

function Set-SslCertificateValidation
{
  <#
    .SYNOPSIS
    This function enables or disables SSL Cert validation in your PowerShell session.  Calling this affects SSL validation for ALL function calls in the session!
    
    .PARAMETER Disable
    If specified, validation is disabled.  If not specified (the default) validation is re-enabled.
    
    .EXAMPLE
    Set-SslCertificateValidation -Disable
    #  Disables SSL Cert validation

    .EXAMPLE
    Set-SslCertificateValidation
    #  Re-enables SSL Cert validation again
  #>
  param
  (
    [switch] $Disable
  )

  $type = [AppDomain]::CurrentDomain.GetAssemblies().ExportedTypes | Where-Object { $_.Name -ieq "TrustAllCertsPolicy" }
  
  if ( !$type )
  {
    #  Disable SSL Certificate validation:
    Add-Type -TypeDefinition @"
        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;
          }
        }
"@
  }

  if ( $Disable )
  {
    [System.Net.ServicePointManager]::CertificatePolicy = New-Object -TypeName TrustAllCertsPolicy
  }
  else
  {
    [System.Net.ServicePointManager]::CertificatePolicy = $null
  }
}