diff --git a/client/windows/CMakeLists.txt b/client/windows/CMakeLists.txt
index 808d367..00ec32e 100644
--- a/client/windows/CMakeLists.txt
+++ b/client/windows/CMakeLists.txt
@@ -39,7 +39,9 @@ add_definitions(-DUNICODE -D_UNICODE)
 # of modifying this function.
 function(APPLY_STANDARD_SETTINGS TARGET)
   target_compile_features(${TARGET} PUBLIC cxx_std_17)
-  target_compile_options(${TARGET} PRIVATE /W4 /WX /wd"4100")
+  # /utf-8: 按 UTF-8 解析源码,否则 zh-CN 机器(代码页 936)对含中文注释的 runner
+  # 源码(如 win32_window.cpp)报 C4819,叠加 /WX 直接编译失败。
+  target_compile_options(${TARGET} PRIVATE /W4 /WX /wd"4100" /utf-8)
   target_compile_options(${TARGET} PRIVATE /EHsc)
   target_compile_definitions(${TARGET} PRIVATE "_HAS_EXCEPTIONS=0")
   target_compile_definitions(${TARGET} PRIVATE "$<$<CONFIG:Debug>:_DEBUG>")