diff --git a/lldb/test/API/lang/cpp/class-template-non-type-parameter-pack/TestClassTemplateNonTypeParameterPack.py b/lldb/test/API/lang/cpp/class-template-non-type-parameter-pack/TestClassTemplateNonTypeParameterPack.py
index 6b4b96049cdb..3a51e08d75e0 100644
--- a/lldb/test/API/lang/cpp/class-template-non-type-parameter-pack/TestClassTemplateNonTypeParameterPack.py
+++ b/lldb/test/API/lang/cpp/class-template-non-type-parameter-pack/TestClassTemplateNonTypeParameterPack.py
@@ -7,6 +7,7 @@ class TestCaseClassTemplateNonTypeParameterPack(TestBase):
 
     mydir = TestBase.compute_mydir(__file__)
 
+    @expectedFailureAll(oslist=["windows"]) # Fails to read memory from target.
     @no_debug_info_test
     def test(self):
         self.build()
diff --git a/lldb/test/API/lang/cpp/class-template-type-parameter-pack/TestClassTemplateTypeParameterPack.py b/lldb/test/API/lang/cpp/class-template-type-parameter-pack/TestClassTemplateTypeParameterPack.py
index 223ba5224274..88beac18e891 100644
--- a/lldb/test/API/lang/cpp/class-template-type-parameter-pack/TestClassTemplateTypeParameterPack.py
+++ b/lldb/test/API/lang/cpp/class-template-type-parameter-pack/TestClassTemplateTypeParameterPack.py
@@ -7,6 +7,7 @@ class TestCaseClassTemplateTypeParameterPack(TestBase):
 
     mydir = TestBase.compute_mydir(__file__)
 
+    @expectedFailureAll(oslist=["windows"]) # Fails to read memory from target.
     @no_debug_info_test
     def test(self):
         self.build()