diff --git a/src/DynamoCore/Configuration/ExecutionSession.cs b/src/DynamoCore/Configuration/ExecutionSession.cs
index 3848d83cbe3..1231a817d3c 100644
--- a/src/DynamoCore/Configuration/ExecutionSession.cs
+++ b/src/DynamoCore/Configuration/ExecutionSession.cs
@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using Dynamo.Interfaces;
@@ -26,6 +26,7 @@ public ExecutionSession(Scheduler.UpdateGraphAsyncTask updateTask, DynamoModel m
             parameters[ParameterKeys.LastExecutionDuration] = new TimeSpan(updateTask.ExecutionEndTime.TickCount - updateTask.ExecutionStartTime.TickCount);
             parameters[ParameterKeys.PackagePaths] = pathManager.PackagesDirectories;
             parameters[ParameterKeys.Logger] = model.Logger;
+            parameters[ParameterKeys.PreferenceFilePath] = pathManager.PreferenceFilePath;
         }
 
         /// <summary>
diff --git a/src/NodeServices/ExecutionSession.cs b/src/NodeServices/ExecutionSession.cs
index 9013a50d2c8..363951ec445 100644
--- a/src/NodeServices/ExecutionSession.cs
+++ b/src/NodeServices/ExecutionSession.cs
@@ -81,6 +81,10 @@ public class ParameterKeys
         /// The return value is an ILogger
         /// </summary>
         public static readonly string Logger = nameof(Logger);
-        
+
+        /// <summary>
+        /// The path to the preference file that is being used by Dynamo.
+        /// </summary>
+        public static readonly string PreferenceFilePath = nameof(PreferenceFilePath);
     }
 }
diff --git a/test/DynamoCoreTests/Configuration/ExecutionSessionTests.cs b/test/DynamoCoreTests/Configuration/ExecutionSessionTests.cs
index e968f919e73..d7edbffd5c6 100644
--- a/test/DynamoCoreTests/Configuration/ExecutionSessionTests.cs
+++ b/test/DynamoCoreTests/Configuration/ExecutionSessionTests.cs
@@ -10,6 +10,7 @@ class ExecutionSessionTests : DynamoModelTestBase
     {
         private TimeSpan lastExecutionDuration = new TimeSpan();
         private IEnumerable<string> packagePaths;
+        private string preferenceFilePath;
 
         protected override void GetLibrariesToPreload(List<string> libraries)
         {
@@ -38,18 +39,19 @@ public void TestExecutionSession()
 
         [Test]
         [Category("UnitTests")]
-        public void TestExecutionSessionPackagePaths()
+        public void TestExecutionSessionPaths()
         {
             ExecutionEvents.GraphPreExecution += ExecutionEvents_GraphPreExecution;
             RunModel(@"core\HomogeneousList\HomogeneousInputsValid.dyn");
-            Assert.IsNotEmpty(packagePaths, "packgePaths was empty");
+            Assert.IsNotEmpty(packagePaths, "packagePaths was empty");
+            Assert.IsNotEmpty(preferenceFilePath, "preferenceFilePath was empty");
             ExecutionEvents.GraphPreExecution -= ExecutionEvents_GraphPreExecution;
         }
 
         private void ExecutionEvents_GraphPreExecution(Session.IExecutionSession session)
         {
             packagePaths = ExecutionEvents.ActiveSession.GetParameterValue(Session.ParameterKeys.PackagePaths) as IEnumerable<string>;
-
+            preferenceFilePath = ExecutionEvents.ActiveSession.GetParameterValue(Session.ParameterKeys.PreferenceFilePath) as string;
         }
         
         [OneTimeTearDown]