diff --git a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/CoreCLR/WebRequestPSCmdlet.CoreClr.cs b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/CoreCLR/WebRequestPSCmdlet.CoreClr.cs
index b8445dad7..750afa12c 100644
--- a/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/CoreCLR/WebRequestPSCmdlet.CoreClr.cs
+++ b/src/Microsoft.PowerShell.Commands.Utility/commands/utility/WebCmdlet/CoreCLR/WebRequestPSCmdlet.CoreClr.cs
@@ -164,17 +164,15 @@ namespace Microsoft.PowerShell.Commands
                 handler.Proxy = WebSession.Proxy;
             }
 
-            /*
-            TODO: HttpClientHandler will support client certificate in RTM
-            See https://github.com/dotnet/corefx/issues/7623 for more details.
             if (null != WebSession.Certificates)
             {
-                handler.ClientCertificates = WebSession.Certificates;
-            }*/
+                handler.ClientCertificates.AddRange(WebSession.Certificates);
+            }
 
             if (SkipCertificateCheck)
             {
-                handler.ServerCertificateCustomValidationCallback = HttpClientHandler.DangerousAcceptAnyServerCertificateValidator; 
+                handler.ServerCertificateCustomValidationCallback = HttpClientHandler.DangerousAcceptAnyServerCertificateValidator;
+                handler.ClientCertificateOptions = ClientCertificateOption.Manual;
             }
 
             // This indicates GetResponse will handle redirects.
diff --git a/test/powershell/Modules/Microsoft.PowerShell.Security/certificateCommon.psm1 b/test/powershell/Modules/Microsoft.PowerShell.Security/certificateCommon.psm1
index e185fa18e..53de520ee 100644
--- a/test/powershell/Modules/Microsoft.PowerShell.Security/certificateCommon.psm1
+++ b/test/powershell/Modules/Microsoft.PowerShell.Security/certificateCommon.psm1
@@ -1,5 +1,13 @@
 Function New-GoodCertificate
 {
+    <#
+        .NOTES
+            This certificate is only issued for the following Key Usages:
+                Key Encipherment
+                Data Encipherment (30)
+                Document Encryption (1.3.6.1.4.1.311.80.1)
+            It Cannot be use for SSL/TLS Client Authentication
+    #>
     $dataEnciphermentCert = "
 MIIKYAIBAzCCCiAGCSqGSIb3DQEHAaCCChEEggoNMIIKCTCCBgoGCSqGSIb3DQEHAaCCBfsEggX3
 MIIF8zCCBe8GCyqGSIb3DQEMCgECoIIE/jCCBPowHAYKKoZIhvcNAQwBAzAOBAgPOFDMBkCffQIC
diff --git a/test/powershell/Modules/Microsoft.PowerShell.Utility/WebCmdlets.Tests.ps1 b/test/powershell/Modules/Microsoft.PowerShell.Utility/WebCmdlets.Tests.ps1
index 638f94f1d..786ebb4cb 100644
--- a/test/powershell/Modules/Microsoft.PowerShell.Utility/WebCmdlets.Tests.ps1
+++ b/test/powershell/Modules/Microsoft.PowerShell.Utility/WebCmdlets.Tests.ps1
@@ -296,6 +296,94 @@ function ExecuteWebRequest
     return $result
 }
 
+function GetSelfSignedCert {
+    <#    
+        .NOTES
+            This certificate is not issued for any specific Key Usage
+            It cannot be used for any service that requires a specific key usage
+            It can be used for SSL/TLS Client Authentication
+    #>
+    $PfxBase64 = @'
+MIIQwQIBAzCCEIcGCSqGSIb3DQEHAaCCEHgEghB0MIIQcDCCBqcGCSqGSIb3DQEHBqCCBpgwggaU
+AgEAMIIGjQYJKoZIhvcNAQcBMBwGCiqGSIb3DQEMAQYwDgQIfGLU4iludG8CAggAgIIGYA2q8iyw
+roL/uN2zcGKynxniSCwn7nCRi5zPs8f7l/ar1YvNjRaPmCZstGpfy/XVHddgPzUp1C8Jj999Z9DX
+XtWILi4D53845NLHnDz8hDsgsyCGkp7GLa8Mi9Mf1dB3BTStJ30nz+qAbkXoedCWnfkkFT7N/g8j
+K+yxvikbDzAB5PLgwACVX4KWqMVoU0VWhK8XyQe2FK05gx2ek789WfX924FfsZ7lDkncMRU0gwk8
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+hqPP3QQIlSXpfTECuB4CAggA
+'@
+    $Bytes = [System.Convert]::FromBase64String($PfxBase64)
+    [System.Security.Cryptography.X509Certificates.X509Certificate2]::new($Bytes)
+}
 
 <#
     Defines the list of redirect codes to test as well as the
@@ -831,6 +919,31 @@ Describe "Invoke-WebRequest tests" -Tags "Feature" {
 
     #endregion SkipHeaderVerification Tests
 
+    #region Certificate Authentication Tests
+
+    # Test pending creation of native test solution 
+    # https://github.com/PowerShell/PowerShell/issues/4609
+    It "Verifies Invoke-WebRequest Certificate Authentication Fails without -Certificate" -Pending {
+        $command = 'Invoke-WebRequest https://prod.idrix.eu/secure/'
+        $result = ExecuteWebCommand -command $command
+        ValidateResponse -response $result
+
+        $result.Output | Should Match ([regex]::Escape('Error: No SSL client certificate presented'))
+    }
+
+    # Test pending creation of native test solution 
+    # https://github.com/PowerShell/PowerShell/issues/4609
+    It "Verifies Invoke-WebRequest  Certificate Authentication Successful with -Certificate" -Pending {
+        $Certificate = GetSelfSignedCert
+        $command = 'Invoke-WebRequest https://prod.idrix.eu/secure/ -Certificate $Certificate'
+        $result = ExecuteWebCommand -command $command
+        ValidateResponse -response $result
+
+        $result.Output.Content | Should Match ([regex]::Escape('SSL Authentication OK!'))
+    }
+
+    #endregion Certificate Authentication Tests
+
     #region charset encoding tests
 
     Context  "BasicHtmlWebResponseObject Encoding tests" {
@@ -1588,6 +1701,29 @@ Describe "Invoke-RestMethod tests" -Tags "Feature" {
 
     #endregion SkipHeaderVerification tests
 
+    #region Certificate Authentication Tests
+
+    # Test pending creation of native test solution 
+    # https://github.com/PowerShell/PowerShell/issues/4609
+    It "Verifies Invoke-RestMethod Certificate Authentication Fails without -Certificate" -Pending {
+        $command = 'Invoke-RestMethod https://prod.idrix.eu/secure/'
+        $result = ExecuteWebCommand -command $command
+
+        $result.Output | Should Match ([regex]::Escape('Error: No SSL client certificate presented'))
+    }
+
+    # Test pending creation of native test solution 
+    # https://github.com/PowerShell/PowerShell/issues/4609
+    It "Verifies Invoke-RestMethod Certificate Authentication Successful with -Certificate" -Pending {
+        $Certificate = GetSelfSignedCert
+        $command = 'Invoke-RestMethod https://prod.idrix.eu/secure/ -Certificate $Certificate'
+        $result = ExecuteWebCommand -command $command
+
+        $result.Output | Should Match ([regex]::Escape('SSL Authentication OK!'))
+    }
+
+    #endregion Certificate Authentication Tests
+
     BeforeEach {
         if ($env:http_proxy) {
             $savedHttpProxy = $env:http_proxy