diff --git a/lib/win32/certstore.rb b/lib/win32/certstore.rb
index 076fbf3..363297c 100644
--- a/lib/win32/certstore.rb
+++ b/lib/win32/certstore.rb
@@ -78,17 +78,6 @@ def get(certificate_thumbprint, store_name: @store_name, store_location: @store_
       cert_get(certificate_thumbprint, store_name: store_name, store_location: store_location)
     end
 
-    # Returns a filepath to a PKCS12 container. The filepath is in a temporary folder so normal housekeeping by the OS should clear it.
-    # However, you should delete it yourself anyway.
-    # @param [certificate_thumbprint<string>] Is the thumbprint of the pfx blob you want to capture
-    # @param [store_location:<string>] A location in the Cert store where the pfx is located, typically 'LocalMachine'
-    # @param [store_name:<string>] A store name from the approved list of stores : MY, ROOT, CA, etc.
-    # @return [Object] of certificate in OpenSSL::X509 format
-    # NOTE: This only works with .NET 5.0 and PowerShell 7.1.2 or later.
-    def get_key(certificate_thumbprint, store_location: @store_location, store_name: @store_name)
-      get_cert_key(certificate_thumbprint, store_location: store_location, store_name: store_name)
-    end
-
     # Returns all the certificates in a store
     # @param [nil]
     # @return [Array] array of certificates list
diff --git a/lib/win32/certstore/mixin/helper.rb b/lib/win32/certstore/mixin/helper.rb
index 076dea8..8ebcb60 100644
--- a/lib/win32/certstore/mixin/helper.rb
+++ b/lib/win32/certstore/mixin/helper.rb
@@ -21,28 +21,6 @@ module Win32
   class Certstore
     module Mixin
       module Helper
-        # PSCommand to search certificate from thumbprint and either turn it into a pem or return a path to a pfx object
-        def key_ps_cmd(thumbprint, store_location: "LocalMachine", store_name: "My")
-          <<-CMD
-            $Location = [Security.Cryptography.X509Certificates.StoreLocation]::#{store_location}
-            $StoreName = [Security.Cryptography.X509Certificates.StoreName]::#{store_name}
-            $Store = New-Object System.Security.Cryptography.X509Certificates.X509Store -ArgumentList $Location
-            $OpenFlags = [System.Security.Cryptography.X509Certificates.OpenFlags]::ReadOnly
-            $Store.Open($OpenFlags)
-            $mycert = $Store.Certificates | Where-Object {$_.Thumbprint -eq "#{thumbprint}"}
-            $mykey = $mycert.PrivateKey
-            $decrypted_key = $mykey.ExportRSAPrivateKey()
-            if ($null -ne $decrypted_key){
-              $content = @(
-              '-----BEGIN RSA PRIVATE KEY-----'
-                  [System.Convert]::ToBase64String($decrypted_key, 'InsertLineBreaks')
-              '-----END RSA PRIVATE KEY-----'
-              )
-            }
-            $content
-          CMD
-        end
-
         def cert_ps_cmd(thumbprint, store_location: "LocalMachine", store_name: "My")
           <<-EOH
             $cert = Get-ChildItem Cert:\\#{store_location}\\#{store_name} -Recurse | Where { $_.Thumbprint -eq "#{thumbprint}" }
diff --git a/lib/win32/certstore/store_base.rb b/lib/win32/certstore/store_base.rb
index 2856888..0156a32 100644
--- a/lib/win32/certstore/store_base.rb
+++ b/lib/win32/certstore/store_base.rb
@@ -244,12 +244,6 @@ def get_cert_pem(thumbprint, store_name:, store_location:)
         get_data.stdout
       end
 
-      # Get Private Key, requires PowerShell 7.1.2 and .Net 5.o or later
-      def get_cert_key(thumbprint, store_location:, store_name: )
-        get_data = powershell_exec!(key_ps_cmd(thumbprint, store_location: store_location, store_name: store_name))
-        get_data.stdout
-      end
-
       # Format pem
       def format_pem(cert_pem)
         cert_pem.delete("\r")
diff --git a/spec/win32/unit/certstore_spec.rb b/spec/win32/unit/certstore_spec.rb
index 60d701b..27af68c 100644
--- a/spec/win32/unit/certstore_spec.rb
+++ b/spec/win32/unit/certstore_spec.rb
@@ -259,7 +259,7 @@
       before(:each) do
         allow_any_instance_of(certbase).to receive(:get_cert_pem).and_return("")
       end
-      it "returns nil" do
+      it "raises Error" do
         store = certstore.open(store_name)
         expect { store.get(thumbprint, store_location: CERT_SYSTEM_STORE_CURRENT_USER, store_name: store_name) }.to raise_error(ArgumentError, "Unable to retrieve the certificate")
       end