Index: test/fuzzer/minimize_crash.test
===================================================================
--- test/fuzzer/minimize_crash.test
+++ test/fuzzer/minimize_crash.test
@@ -1,3 +1,4 @@
+UNSUPPORTED: windows
 RUN: %cpp_compiler %S/NullDerefTest.cpp -o %t-NullDerefTest
 RUN: %cpp_compiler %S/SingleByteInputTest.cpp -o %t-SingleByteInputTest
 RUN: mkdir -p %t.dir
Index: test/fuzzer/minimize_two_crashes.test
===================================================================
--- test/fuzzer/minimize_two_crashes.test
+++ test/fuzzer/minimize_two_crashes.test
@@ -1,5 +1,5 @@
 # Test that the minimizer stops when it sees a differe bug.
-UNSUPPORTED: freebsd
+UNSUPPORTED: freebsd,windows
 
 # TODO: Find out why test fails on Darwin with -O2.
 RUN: %cpp_compiler -O0 %S/TwoDifferentBugsTest.cpp -o %t-TwoDifferentBugsTest
Index: test/fuzzer/null-deref-on-empty.test
===================================================================
--- test/fuzzer/null-deref-on-empty.test
+++ test/fuzzer/null-deref-on-empty.test
@@ -1,3 +1,4 @@
+UNSUPPORTED: windows
 RUN: %cpp_compiler %S/NullDerefOnEmptyTest.cpp -o %t-NullDerefOnEmptyTest
 
 RUN: not %run %t-NullDerefOnEmptyTest -print_final_stats=1 2>&1 | FileCheck %s --check-prefix=NULL_DEREF_ON_EMPTY
Index: test/fuzzer/null-deref.test
===================================================================
--- test/fuzzer/null-deref.test
+++ test/fuzzer/null-deref.test
@@ -1,3 +1,4 @@
+UNSUPPORTED: windows
 RUN: %cpp_compiler %S/NullDerefTest.cpp -o %t-NullDerefTest
 
 RUN: not %run %t-NullDerefTest                  2>&1 | FileCheck %s --check-prefix=NullDerefTest