diff --git a/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-components/src/main/java/org/apache/nifi/controller/StandardProcessorNode.java b/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-components/src/main/java/org/apache/nifi/controller/StandardProcessorNode.java
index 5556e5a279..81a858319e 100644
--- a/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-components/src/main/java/org/apache/nifi/controller/StandardProcessorNode.java
+++ b/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-components/src/main/java/org/apache/nifi/controller/StandardProcessorNode.java
@@ -105,6 +105,7 @@ import java.util.concurrent.Callable;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.Future;
+import java.util.concurrent.RejectedExecutionException;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -1799,8 +1800,15 @@ public class StandardProcessorNode extends ProcessorNode implements Connectable
             return null;
         };
 
-        // Trigger the task in a background thread.
-        final Future<?> taskFuture = schedulingAgentCallback.scheduleTask(startupTask);
+        final Future<?> taskFuture;
+        try {
+            // Trigger the task in a background thread.
+            taskFuture = schedulingAgentCallback.scheduleTask(startupTask);
+        } catch (RejectedExecutionException rejectedExecutionException) {
+            final ValidationState validationState = getValidationState();
+            LOG.error("Unable to start {}.  Last known validation state was {} : {}", this, validationState, validationState.getValidationErrors(), rejectedExecutionException);
+            return;
+        }
 
         // Trigger a task periodically to check if @OnScheduled task completed. Once it has,
         // this task will call SchedulingAgentCallback#onTaskComplete.
diff --git a/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-components/src/main/java/org/apache/nifi/controller/service/StandardControllerServiceNode.java b/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-components/src/main/java/org/apache/nifi/controller/service/StandardControllerServiceNode.java
index fccfbf99fd..811fa9933c 100644
--- a/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-components/src/main/java/org/apache/nifi/controller/service/StandardControllerServiceNode.java
+++ b/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-components/src/main/java/org/apache/nifi/controller/service/StandardControllerServiceNode.java
@@ -76,6 +76,7 @@ import java.util.Map.Entry;
 import java.util.Optional;
 import java.util.Set;
 import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.RejectedExecutionException;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
@@ -588,7 +589,12 @@ public class StandardControllerServiceNode extends AbstractComponentNode impleme
                         LOG.debug("Cannot enable {} because it is not currently valid. (Validation State is {}: {}). Will try again in 1 second",
                             StandardControllerServiceNode.this, validationState, validationState.getValidationErrors());
 
-                        scheduler.schedule(this, 1, TimeUnit.SECONDS);
+                        try {
+                            scheduler.schedule(this, 1, TimeUnit.SECONDS);
+                        } catch (RejectedExecutionException rejectedExecutionException) {
+                            LOG.error("Unable to enable {}.  Last known validation state was {} : {}", StandardControllerServiceNode.this, validationState, validationState.getValidationErrors(),
+                                    rejectedExecutionException);
+                        }
                         future.complete(null);
                         return;
                     }