diff --git a/ext/authx/tests/phpunit/Civi/Authx/AbstractFlowsTest.php b/ext/authx/tests/phpunit/Civi/Authx/AbstractFlowsTest.php
index 63482574936d..3c9cb3121465 100644
--- a/ext/authx/tests/phpunit/Civi/Authx/AbstractFlowsTest.php
+++ b/ext/authx/tests/phpunit/Civi/Authx/AbstractFlowsTest.php
@@ -32,7 +32,7 @@ public static function setUpBeforeClass(): void {
       ->installMe(__DIR__)
       ->callback(
         function() {
-          \CRM_Utils_System::synchronizeUsers();
+          \CRM_Utils_System::synchronizeUsersIfAllowed();
         },
         'synchronizeUsers'
       )
diff --git a/tests/phpunit/CiviTest/CiviEndToEndTestCase.php b/tests/phpunit/CiviTest/CiviEndToEndTestCase.php
index 4434150e53a7..8980fbc69b86 100644
--- a/tests/phpunit/CiviTest/CiviEndToEndTestCase.php
+++ b/tests/phpunit/CiviTest/CiviEndToEndTestCase.php
@@ -17,7 +17,7 @@ public static function setUpBeforeClass(): void {
       'name' => $GLOBALS['_CV']['ADMIN_USER'],
       'pass' => $GLOBALS['_CV']['ADMIN_PASS'],
     ]);
-    CRM_Utils_System::synchronizeUsers();
+    CRM_Utils_System::synchronizeUsersIfAllowed();
 
     parent::setUpBeforeClass();
   }
diff --git a/tests/phpunit/E2E/Cache/CacheTestCase.php b/tests/phpunit/E2E/Cache/CacheTestCase.php
index fe2703003063..b46c2662d258 100644
--- a/tests/phpunit/E2E/Cache/CacheTestCase.php
+++ b/tests/phpunit/E2E/Cache/CacheTestCase.php
@@ -24,7 +24,7 @@ public static function setUpBeforeClass(): void {
       'name' => $GLOBALS['_CV']['ADMIN_USER'],
       'pass' => $GLOBALS['_CV']['ADMIN_PASS'],
     ]);
-    CRM_Utils_System::synchronizeUsers();
+    \CRM_Utils_System::synchronizeUsersIfAllowed();
 
     parent::setUpBeforeClass();
   }
diff --git a/tests/phpunit/E2E/Extern/AuthxRestTest.php b/tests/phpunit/E2E/Extern/AuthxRestTest.php
index bfa8f748ded6..5a270cde9168 100644
--- a/tests/phpunit/E2E/Extern/AuthxRestTest.php
+++ b/tests/phpunit/E2E/Extern/AuthxRestTest.php
@@ -22,7 +22,7 @@ public static function setUpBeforeClass(): void {
       ->install(['authx'])
       ->callback(
         function() {
-          \CRM_Utils_System::synchronizeUsers();
+          \CRM_Utils_System::synchronizeUsersIfAllowed();
         },
         'synchronizeUsers'
       )