diff --git a/x-pack/plugin/ilm/src/main/java/org/elasticsearch/xpack/slm/SnapshotRetentionTask.java b/x-pack/plugin/ilm/src/main/java/org/elasticsearch/xpack/slm/SnapshotRetentionTask.java
index 52fba7eaf6aac..283e121cb5300 100644
--- a/x-pack/plugin/ilm/src/main/java/org/elasticsearch/xpack/slm/SnapshotRetentionTask.java
+++ b/x-pack/plugin/ilm/src/main/java/org/elasticsearch/xpack/slm/SnapshotRetentionTask.java
@@ -270,6 +270,7 @@ void getAllRetainableSnapshots(Collection<String> repositories, ActionListener<M
             for (String repository : repositories) {
                 client.admin().cluster()
                     .prepareGetSnapshots(repository)
+                    .setIgnoreUnavailable(true)
                     .execute(ActionListener.wrap(resp -> {
                             final Set<SnapshotState> retainableStates =
                                 new HashSet<>(Arrays.asList(SnapshotState.SUCCESS, SnapshotState.FAILED, SnapshotState.PARTIAL));