diff --git a/lldb/test/API/python_api/thread/TestThreadAPI.py b/lldb/test/API/python_api/thread/TestThreadAPI.py
index d5fc77532d8595..a74302263aa45a 100644
--- a/lldb/test/API/python_api/thread/TestThreadAPI.py
+++ b/lldb/test/API/python_api/thread/TestThreadAPI.py
@@ -51,7 +51,8 @@ def test_negative_indexing(self):
         """Test SBThread.frame with negative indexes."""
         self.build()
         self.validate_negative_indexing()
-
+ 
+    @expectedFailureAll(oslist=["windows"])
     def test_StepInstruction(self):
         """Test that StepInstruction preserves the plan stack."""
         self.build()