Index: packages/Python/lldbsuite/test/expression_command/call-overridden-method/TestCallOverriddenMethod.py
===================================================================
--- packages/Python/lldbsuite/test/expression_command/call-overridden-method/TestCallOverriddenMethod.py
+++ packages/Python/lldbsuite/test/expression_command/call-overridden-method/TestCallOverriddenMethod.py
@@ -26,6 +26,7 @@
         # Find the line number to break for main.c.
         self.line = line_number('main.cpp', '// Set breakpoint here')
 
+    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr21765")
     def test(self):
         """Test calls to overridden methods in derived classes."""
         self.build()
Index: packages/Python/lldbsuite/test/expression_command/pr35310/TestExprsBug35310.py
===================================================================
--- packages/Python/lldbsuite/test/expression_command/pr35310/TestExprsBug35310.py
+++ packages/Python/lldbsuite/test/expression_command/pr35310/TestExprsBug35310.py
@@ -16,6 +16,7 @@
         self.main_source = "main.cpp"
         self.main_source_spec = lldb.SBFileSpec(self.main_source)
 
+    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr21765")
     def test_issue35310(self):
         """Test invoking functions with non-standard linkage names.
 
Index: packages/Python/lldbsuite/test/functionalities/completion/TestCompletion.py
===================================================================
--- packages/Python/lldbsuite/test/functionalities/completion/TestCompletion.py
+++ packages/Python/lldbsuite/test/functionalities/completion/TestCompletion.py
@@ -235,6 +235,7 @@
         self.complete_from_to("watchpoint set variable foo --watch w", "watchpoint set variable foo --watch write")
         self.complete_from_to('watchpoint set variable foo -w read_', 'watchpoint set variable foo -w read_write')
 
+    @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24489")
     def test_symbol_name(self):
         self.build()
         self.dbg.CreateTarget(self.getBuildArtifact("a.out"))