diff --git a/buildSrc/src/main/java/org/elasticsearch/gradle/testclusters/ElasticsearchNode.java b/buildSrc/src/main/java/org/elasticsearch/gradle/testclusters/ElasticsearchNode.java
index 900a0f99ed9..b5a04969687 100644
--- a/buildSrc/src/main/java/org/elasticsearch/gradle/testclusters/ElasticsearchNode.java
+++ b/buildSrc/src/main/java/org/elasticsearch/gradle/testclusters/ElasticsearchNode.java
@@ -105,6 +105,8 @@ public class ElasticsearchNode implements TestClusterConfiguration {
         "is a pre-release version of Elasticsearch",
         "max virtual memory areas vm.max_map_count"
     );
+    private static final String HOSTNAME_OVERRIDE = "LinuxDarwinHostname";
+    private static final String COMPUTERNAME_OVERRIDE = "WindowsComputername";
 
     private final String path;
     private final String name;
@@ -604,6 +606,10 @@ public class ElasticsearchNode implements TestClusterConfiguration {
         // Windows requires this as it defaults to `c:\windows` despite ES_TMPDIR
         defaultEnv.put("TMP", tmpDir.toString());
 
+        // Override the system hostname variables for testing
+        defaultEnv.put("HOSTNAME", HOSTNAME_OVERRIDE);
+        defaultEnv.put("COMPUTERNAME", COMPUTERNAME_OVERRIDE);
+
         Set<String> commonKeys = new HashSet<>(environment.keySet());
         commonKeys.retainAll(defaultEnv.keySet());
         if (commonKeys.isEmpty() == false) {
diff --git a/qa/unconfigured-node-name/build.gradle b/qa/unconfigured-node-name/build.gradle
index 57213f689a5..bcdc9ac958e 100644
--- a/qa/unconfigured-node-name/build.gradle
+++ b/qa/unconfigured-node-name/build.gradle
@@ -30,6 +30,4 @@ testClusters.integTest {
 integTest.runner {
   nonInputProperties.systemProperty 'tests.logfile',
     "${ -> testClusters.integTest.singleNode().getServerLog() }"
-  // https://github.com/elastic/elasticsearch/issues/44656
-  onlyIf { OS.WINDOWS.equals(OS.current()) == false }
 }
diff --git a/qa/unconfigured-node-name/src/test/java/org/elasticsearch/unconfigured_node_name/JsonLogsFormatAndParseIT.java b/qa/unconfigured-node-name/src/test/java/org/elasticsearch/unconfigured_node_name/JsonLogsFormatAndParseIT.java
index 50cc20b0e57..e7f5b892647 100644
--- a/qa/unconfigured-node-name/src/test/java/org/elasticsearch/unconfigured_node_name/JsonLogsFormatAndParseIT.java
+++ b/qa/unconfigured-node-name/src/test/java/org/elasticsearch/unconfigured_node_name/JsonLogsFormatAndParseIT.java
@@ -30,12 +30,22 @@ import java.nio.file.Path;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
 
-import static org.hamcrest.Matchers.not;
+import static org.hamcrest.Matchers.equalTo;
 
 public class JsonLogsFormatAndParseIT extends JsonLogsIntegTestCase {
+    private static final String OS_NAME = System.getProperty("os.name");
+    private static final boolean WINDOWS = OS_NAME.startsWith("Windows");
+
+    // These match the values defined in org.elasticsearch.gradle.testclusters.ElasticsearchNode
+    private static final String COMPUTERNAME = "WindowsComputername";
+    private static final String HOSTNAME = "LinuxDarwinHostname";
+
     @Override
     protected Matcher<String> nodeNameMatcher() {
-        return not("");
+        if (WINDOWS) {
+            return equalTo(COMPUTERNAME);
+        }
+        return equalTo(HOSTNAME);
     }
 
     @Override