diff --git a/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/compare.pass.cpp b/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/compare.pass.cpp
--- a/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/compare.pass.cpp
+++ b/libcxx/test/std/localization/locale.categories/category.collate/locale.collate.byname/compare.pass.cpp
@@ -23,7 +23,12 @@
 // Glibc seems to collate files differently from the way Apple's C library does it.
 // XFAIL: target={{.*}}-linux-gnu{{.*}}
 
-// XFAIL: LIBCXX-WINDOWS-FIXME
+// https://llvm.org/PR41018
+// XFAIL: windows-dll && msvc
+
+// Windows also collates differently than the Apple C library way, that this
+// test is written for.
+// XFAIL: windows
 
 // XFAIL: LIBCXX-AIX-FIXME