diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7dbc2bfe54510..af54c35a5e640 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -32,6 +32,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Added support for feature flags in opensearch.yml ([#4959](https://github.com/opensearch-project/OpenSearch/pull/4959))
 - Add query for initialized extensions ([#5658](https://github.com/opensearch-project/OpenSearch/pull/5658))
 - Revert 'Added jackson dependency to server' and change extension reading ([#5768](https://github.com/opensearch-project/OpenSearch/pull/5768))
+- Add support to disallow search request with preference parameter with strict weighted shard routing([#5874](https://github.com/opensearch-project/OpenSearch/pull/5874))
 
 ### Dependencies
 - Bumps `log4j-core` from 2.18.0 to 2.19.0
@@ -120,4 +121,4 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Security
 
 [Unreleased 3.0]: https://github.com/opensearch-project/OpenSearch/compare/2.4...HEAD
-[Unreleased 2.x]: https://github.com/opensearch-project/OpenSearch/compare/2.4...2.x
\ No newline at end of file
+[Unreleased 2.x]: https://github.com/opensearch-project/OpenSearch/compare/2.4...2.x
diff --git a/server/src/main/java/org/opensearch/OpenSearchException.java b/server/src/main/java/org/opensearch/OpenSearchException.java
index 91967dc290433..4fa20f74eb044 100644
--- a/server/src/main/java/org/opensearch/OpenSearchException.java
+++ b/server/src/main/java/org/opensearch/OpenSearchException.java
@@ -34,6 +34,7 @@
 
 import org.opensearch.action.support.replication.ReplicationOperation;
 import org.opensearch.cluster.action.shard.ShardStateAction;
+import org.opensearch.cluster.routing.PreferenceBasedSearchNotAllowedException;
 import org.opensearch.cluster.routing.UnsupportedWeightedRoutingStateException;
 import org.opensearch.cluster.service.ClusterManagerThrottlingException;
 import org.opensearch.common.CheckedFunction;
@@ -72,6 +73,7 @@
 import static org.opensearch.Version.V_2_1_0;
 import static org.opensearch.Version.V_2_4_0;
 import static org.opensearch.Version.V_2_5_0;
+import static org.opensearch.Version.V_2_6_0;
 import static org.opensearch.Version.V_3_0_0;
 import static org.opensearch.cluster.metadata.IndexMetadata.INDEX_UUID_NA_VALUE;
 import static org.opensearch.common.xcontent.XContentParserUtils.ensureExpectedToken;
@@ -1632,6 +1634,12 @@ private enum OpenSearchExceptionHandle {
             167,
             V_2_5_0
         ),
+        PREFERENCE_BASED_SEARCH_NOT_ALLOWED_EXCEPTION(
+            PreferenceBasedSearchNotAllowedException.class,
+            PreferenceBasedSearchNotAllowedException::new,
+            168,
+            V_2_6_0
+        ),
         INDEX_CREATE_BLOCK_EXCEPTION(
             org.opensearch.cluster.block.IndexCreateBlockException.class,
             org.opensearch.cluster.block.IndexCreateBlockException::new,
diff --git a/server/src/test/java/org/opensearch/ExceptionSerializationTests.java b/server/src/test/java/org/opensearch/ExceptionSerializationTests.java
index aaf82fa42406d..db1aeb3eeb614 100644
--- a/server/src/test/java/org/opensearch/ExceptionSerializationTests.java
+++ b/server/src/test/java/org/opensearch/ExceptionSerializationTests.java
@@ -54,6 +54,7 @@
 import org.opensearch.cluster.decommission.NodeDecommissionedException;
 import org.opensearch.cluster.node.DiscoveryNode;
 import org.opensearch.cluster.routing.IllegalShardRoutingStateException;
+import org.opensearch.cluster.routing.PreferenceBasedSearchNotAllowedException;
 import org.opensearch.cluster.routing.ShardRouting;
 import org.opensearch.cluster.routing.ShardRoutingState;
 import org.opensearch.cluster.routing.TestShardRouting;
@@ -867,6 +868,7 @@ public void testIds() {
         ids.put(165, ClusterManagerThrottlingException.class);
         ids.put(166, SnapshotInUseDeletionException.class);
         ids.put(167, UnsupportedWeightedRoutingStateException.class);
+        ids.put(168, PreferenceBasedSearchNotAllowedException.class);
         ids.put(10001, IndexCreateBlockException.class);
 
         Map<Class<? extends OpenSearchException>, Integer> reverse = new HashMap<>();