diff --git a/Core/Code/Algorithms/mitkUIDGenerator.cpp b/Core/Code/Algorithms/mitkUIDGenerator.cpp
index 38b9eb885c..1d174acc4d 100644
--- a/Core/Code/Algorithms/mitkUIDGenerator.cpp
+++ b/Core/Code/Algorithms/mitkUIDGenerator.cpp
@@ -1,87 +1,93 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 #include <mitkUIDGenerator.h>
 #include <mitkLogMacros.h>
 
 #include <ctime>
 #include <cstdlib>
 #include <sstream>
 #include <math.h>
 #include <stdexcept>
 #include <iostream>
 
 namespace mitk {
 
 UIDGenerator::UIDGenerator(const char* prefix, unsigned int lengthOfRandomPart)
 :m_Prefix(prefix),
  m_LengthOfRandomPart(lengthOfRandomPart)
 {
   if (lengthOfRandomPart < 5)
   {
-    MITK_ERROR << lengthOfRandomPart << " are not really unique, right?" << std::endl;
+    MITK_ERROR << "To few digits requested (" <<lengthOfRandomPart<< " digits)";
     throw std::invalid_argument("To few digits requested");
   }
 
   static int instanceID = 0;
-  unsigned int seed = ((time( (time_t *)0 )) + getpid()) * 10 + instanceID++;
+  int processID = 0;
+  #ifdef WIN32
+    processID = _getpid();
+  #else
+    processID = getpid();
+  #endif
+  unsigned int seed = ((time( (time_t *)0 )) + processID) * 10 + instanceID++;
   std::srand(seed);
 }
 
 std::string UIDGenerator::GetUID()
 {
   std::ostringstream s;
   s << m_Prefix;
   time_t tt = time(0);
   tm* t = gmtime(&tt);
 
   if (t)
   {
 
 
     s << t->tm_year + 1900;
 
     if (t->tm_mon < 9) s << "0"; // add a 0 for months 1 to 9
     s << t->tm_mon + 1;
 
     if (t->tm_mday < 10) s << "0"; // add a 0 for days 1 to 9
     s << t->tm_mday;
 
     if (t->tm_hour < 10) s << "0"; // add a 0 for hours 1 to 9
     s << t->tm_hour;
 
     if (t->tm_min < 10) s << "0"; // add a 0 for minutes 1 to 9
     s << t->tm_min;
 
     if (t->tm_sec < 10) s << "0"; // add a 0 for seconds 1 to 9
     s << t->tm_sec;
 
     std::ostringstream rs;
     rs << (long int)( pow(10.0, double(m_LengthOfRandomPart)) / double(RAND_MAX) * double(rand()) );
 
     for (size_t i = rs.str().length(); i < m_LengthOfRandomPart; ++i)
     {
       s << "X";
     }
 
     s << rs.str();
   }
 
   return s.str();
 }
 
 }