diff --git a/Modules.Interfaces/Interfaces.vbproj b/Modules.Interfaces/Interfaces.vbproj
index 5a56b305..f8237cd2 100644
--- a/Modules.Interfaces/Interfaces.vbproj
+++ b/Modules.Interfaces/Interfaces.vbproj
@@ -136,9 +136,6 @@
       <LastGenOutput>Settings.Designer.vb</LastGenOutput>
     </None>
     <None Include="packages.config" />
-    <None Include="ZUGFeRDInterface\pdf_zugferd_lib\pdf_zugferd_lib.lib">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None>
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Modules.Database\Database.vbproj">
@@ -150,14 +147,6 @@
       <Name>Logging</Name>
     </ProjectReference>
   </ItemGroup>
-  <ItemGroup>
-    <Content Include="ZUGFeRDInterface\pdf_zugferd_lib\pdf_zugferd_lib.dll">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </Content>
-    <Content Include="ZUGFeRDInterface\pdf_zugferd_lib\pdf_zugferd_test.exe">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </Content>
-  </ItemGroup>
   <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.VisualBasic.targets" />
 </Project>
\ No newline at end of file
diff --git a/Modules.Interfaces/ZUGFeRDInterface.vb b/Modules.Interfaces/ZUGFeRDInterface.vb
index 56297e10..9c69de55 100644
--- a/Modules.Interfaces/ZUGFeRDInterface.vb
+++ b/Modules.Interfaces/ZUGFeRDInterface.vb
@@ -40,23 +40,12 @@ Public Class ZUGFeRDInterface
         End Try
     End Sub
 
-
     ''' <summary>
     ''' Validates a ZUGFeRD File and extracts the XML Document from it
     ''' </summary>
     ''' <param name="Path"></param>
     ''' <exception cref="ZUGFeRDExecption"></exception>
     ''' <returns></returns>
-    Public Function ExtractZUGFeRDFile(Path As String) As CrossIndustryDocumentType
-        Dim oXmlDocument = ValidateZUGFeRDFile(Path)
-
-        If IsNothing(oXmlDocument) Then
-            Throw New ZUGFeRDExecption(ErrorType.NoZugferd, "Datei ist keine ZUGFeRD Datei.")
-        End If
-
-        Return SerializeZUGFeRDDocument(oXmlDocument)
-    End Function
-
     Public Function ExtractZUGFeRDFileWithGDPicture(Path As String) As CrossIndustryDocumentType
         Dim oXmlDocument = ValidateZUGFeRDFileWithGDPicture(Path)
 
@@ -67,6 +56,12 @@ Public Class ZUGFeRDInterface
         Return SerializeZUGFeRDDocument(oXmlDocument)
     End Function
 
+    ''' <summary>
+    ''' Validates a ZUGFeRD File and extracts the XML Document from it
+    ''' </summary>
+    ''' <param name="Stream"></param>
+    ''' <exception cref="ZUGFeRDExecption"></exception>
+    ''' <returns></returns>
     Public Function ExtractZUGFeRDFileWithGDPicture(Stream As Stream) As CrossIndustryDocumentType
         Dim oXmlDocument = ValidateZUGFeRDFileWithGDPicture(Stream)
 
@@ -77,50 +72,12 @@ Public Class ZUGFeRDInterface
         Return SerializeZUGFeRDDocument(oXmlDocument)
     End Function
 
-    Public Function ValidateZUGFeRDFile(Path As String) As XPathDocument
-        Dim oProcessOutput, oProcessError As String
-        Dim oXmlDocument As XPathDocument
-        Dim oTempFile = IO.Path.GetTempFileName()
-
-        Dim oProcess As New Process() With {
-            .StartInfo = New ProcessStartInfo() With {
-                .FileName = ZUGFERD_CONVERTER_EXE,
-                .RedirectStandardError = True,
-                .RedirectStandardOutput = True,
-                .UseShellExecute = False,
-                .Arguments = $"-i ""{Path}"" -o ""{oTempFile}"""
-            }
-        }
-
-        Try
-            oProcess.Start()
-            oProcessOutput = oProcess.StandardOutput.ReadToEnd()
-            oProcessError = oProcess.StandardError.ReadToEnd()
-            oProcess.WaitForExit()
-
-            _logger.Debug("Process Output:")
-            _logger.Debug(oProcessOutput)
-        Catch ex As Exception
-            _logger.Error(ex)
-            Throw ex
-        End Try
-
-        If Not oProcessOutput.ToLower.Contains(ZUGFERD_CONVERTER_SUCCESS_MESSAGE.ToLower) Then
-            _logger.Warn("File {0} is not a valid ZUGFeRD File!", Path)
-            Throw New ZUGFeRDExecption(ErrorType.NoZugferd, "Datei ist keine ZUGFeRD Datei.")
-        End If
-
-        Try
-            oXmlDocument = New XPathDocument(oTempFile)
-
-        Catch ex As Exception
-            _logger.Error(ex)
-            Throw ex
-        End Try
-
-        Return oXmlDocument
-    End Function
-
+    ''' <summary>
+    ''' Validates a ZUGFeRD File and extracts the XML Document from it
+    ''' </summary>
+    ''' <param name="Stream"></param>
+    ''' <exception cref="ZUGFeRDExecption"></exception>
+    ''' <returns></returns>
     Public Function ValidateZUGFeRDFileWithGDPicture(Stream As Stream) As XPathDocument
         Dim oEmbedExtractor = New PDFEmbeds(_logConfig)
         Dim oAllowedExtensions = New List(Of String) From {"xml"}
diff --git a/Modules.Interfaces/ZUGFeRDInterface/pdf_zugferd_lib/pdf_zugferd_lib.dll b/Modules.Interfaces/ZUGFeRDInterface/pdf_zugferd_lib/pdf_zugferd_lib.dll
deleted file mode 100644
index 3583ada1..00000000
Binary files a/Modules.Interfaces/ZUGFeRDInterface/pdf_zugferd_lib/pdf_zugferd_lib.dll and /dev/null differ
diff --git a/Modules.Interfaces/ZUGFeRDInterface/pdf_zugferd_lib/pdf_zugferd_lib.lib b/Modules.Interfaces/ZUGFeRDInterface/pdf_zugferd_lib/pdf_zugferd_lib.lib
deleted file mode 100644
index c3c4828f..00000000
Binary files a/Modules.Interfaces/ZUGFeRDInterface/pdf_zugferd_lib/pdf_zugferd_lib.lib and /dev/null differ
diff --git a/Modules.Interfaces/ZUGFeRDInterface/pdf_zugferd_lib/pdf_zugferd_test.exe b/Modules.Interfaces/ZUGFeRDInterface/pdf_zugferd_lib/pdf_zugferd_test.exe
deleted file mode 100644
index 325def83..00000000
Binary files a/Modules.Interfaces/ZUGFeRDInterface/pdf_zugferd_lib/pdf_zugferd_test.exe and /dev/null differ