diff --git a/src/StructuredLogger/Construction/MessageProcessor.cs b/src/StructuredLogger/Construction/MessageProcessor.cs
index 9229f8a6d..2604f817a 100644
--- a/src/StructuredLogger/Construction/MessageProcessor.cs
+++ b/src/StructuredLogger/Construction/MessageProcessor.cs
@@ -47,7 +47,7 @@ public void Process(BuildMessageEventArgs args)
             }
 
             var buildEventContext = args.BuildEventContext;
-            if (buildEventContext.TaskId != BuildEventContext.InvalidTaskId)
+            if (buildEventContext != null && buildEventContext.TaskId != BuildEventContext.InvalidTaskId)
             {
                 if (message.StartsWith(Strings.OutputItemsMessagePrefix, StringComparison.Ordinal))
                 {
@@ -94,7 +94,7 @@ public void Process(BuildMessageEventArgs args)
                     }
                 }
             }
-            else if (buildEventContext.TargetId != BuildEventContext.InvalidTargetId)
+            else if (buildEventContext != null && buildEventContext.TargetId != BuildEventContext.InvalidTargetId)
             {
                 if (message.StartsWith(Strings.ItemGroupIncludeMessagePrefix, StringComparison.Ordinal))
                 {
@@ -124,7 +124,7 @@ public void Process(BuildMessageEventArgs args)
                     return;
                 }
             }
-            else if (buildEventContext.EvaluationId != BuildEventContext.InvalidEvaluationId)
+            else if (buildEventContext != null && buildEventContext.EvaluationId != BuildEventContext.InvalidEvaluationId)
             {
             }
             else
@@ -392,7 +392,7 @@ public void AddMessage(LazyFormattedBuildEventArgs args, string message)
 
             var buildEventContext = args.BuildEventContext;
 
-            if (buildEventContext.TaskId > 0)
+            if (buildEventContext != null && buildEventContext.TaskId > 0)
             {
                 parent = GetTask(args);
                 if (parent is Task task)
@@ -431,7 +431,7 @@ public void AddMessage(LazyFormattedBuildEventArgs args, string message)
                     }
                 }
             }
-            else if (buildEventContext.TargetId > 0)
+            else if (buildEventContext != null && buildEventContext.TargetId > 0)
             {
                 parent = GetTarget(args);
 
@@ -440,7 +440,7 @@ public void AddMessage(LazyFormattedBuildEventArgs args, string message)
                     lowRelevance = true;
                 }
             }
-            else if (buildEventContext.ProjectContextId > 0)
+            else if (buildEventContext != null && buildEventContext.ProjectContextId > 0)
             {
                 var project = construction.GetOrAddProject(buildEventContext.ProjectContextId);
                 parent = project;
@@ -470,7 +470,7 @@ public void AddMessage(LazyFormattedBuildEventArgs args, string message)
                     }
                 }
             }
-            else if (buildEventContext.EvaluationId != -1)
+            else if (buildEventContext != null && buildEventContext.EvaluationId != -1)
             {
                 parent = construction.EvaluationFolder;
 
@@ -533,6 +533,7 @@ public void AddMessage(LazyFormattedBuildEventArgs args, string message)
                     lowRelevance = true;
                 }
                 else if (
+                    buildEventContext != null &&
                     buildEventContext.NodeId == 0 &&
                     buildEventContext.ProjectContextId == 0 &&
                     buildEventContext.ProjectInstanceId == 0 &&
@@ -551,6 +552,7 @@ public void AddMessage(LazyFormattedBuildEventArgs args, string message)
                     return;
                 }
                 else if (
+                    buildEventContext != null &&
                     buildEventContext.NodeId == -2 &&
                     buildEventContext.ProjectContextId == -2 &&
                     buildEventContext.ProjectInstanceId == -1)