Private/Unblock-SelfSignedCert.ps1

function Unblock-SelfSignedCert() {
  <#
    .SYNOPSIS
    Allows the use of self-signed certficates

    .DESCRIPTION
    The Unblock-SelfSignedCert function enables the usage of self-signed certificates for HTTPs connections by loading the approapriate Cerficate Policies
  #>

  
  Write-Verbose -Message 'Allowing self-signed certificates'
    
  if ([System.Net.ServicePointManager]::CertificatePolicy -notlike 'TrustAllCertsPolicy') {
    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;
        }
    }
"@

    [System.Net.ServicePointManager]::CertificatePolicy = New-Object -TypeName TrustAllCertsPolicy
  }
}