diff --git a/Modules/_multiprocessing/semaphore.c b/Modules/_multiprocessing/semaphore.c
index eb3fa0c..bdf56a9 100644
--- a/Modules/_multiprocessing/semaphore.c
+++ b/Modules/_multiprocessing/semaphore.c
@@ -43,7 +43,7 @@
 {
     long previous;
 
-    switch (WaitForSingleObject(handle, 0)) {
+    switch (WaitForSingleObjectEx(handle, 0, FALSE)) {
     case WAIT_OBJECT_0:
         if (!ReleaseSemaphore(handle, 1, &previous))
             return MP_STANDARD_ERROR;
@@ -99,7 +99,7 @@
     }
 
     /* check whether we can acquire without releasing the GIL and blocking */
-    if (WaitForSingleObject(self->handle, 0) == WAIT_OBJECT_0) {
+    if (WaitForSingleObjectEx(self->handle, 0, FALSE) == WAIT_OBJECT_0) {
         self->last_tid = GetCurrentThreadId();
         ++self->count;
         Py_RETURN_TRUE;
diff --git a/Modules/timemodule.c b/Modules/timemodule.c
index 8a81c8c..d5ffdcc 100644
--- a/Modules/timemodule.c
+++ b/Modules/timemodule.c
@@ -1574,7 +1574,7 @@
             DWORD rc;
             HANDLE hInterruptEvent = _PyOS_SigintEvent();
             ResetEvent(hInterruptEvent);
-            rc = WaitForSingleObject(hInterruptEvent, ul_millis);
+            rc = WaitForSingleObjectEx(hInterruptEvent, ul_millis, FALSE);
             if (rc == WAIT_OBJECT_0) {
                 Py_BLOCK_THREADS
                 errno = EINTR;
diff --git a/PC/launcher.c b/PC/launcher.c
index dfad44a..df2580b 100644
--- a/PC/launcher.c
+++ b/PC/launcher.c
@@ -535,7 +535,7 @@
         error(RC_CREATE_PROCESS, L"Unable to create process using '%s'", cmdline);
     AssignProcessToJobObject(job, pi.hProcess);
     CloseHandle(pi.hThread);
-    WaitForSingleObject(pi.hProcess, INFINITE);
+    WaitForSingleObjectEx(pi.hProcess, INFINITE, FALSE);
     ok = GetExitCodeProcess(pi.hProcess, &rc);
     if (!ok)
         error(RC_CREATE_PROCESS, L"Failed to get exit code of process");
diff --git a/Parser/myreadline.c b/Parser/myreadline.c
index d864623..8b27045 100644
--- a/Parser/myreadline.c
+++ b/Parser/myreadline.c
@@ -68,7 +68,7 @@
         */
         if (GetLastError()==ERROR_OPERATION_ABORTED) {
             hInterruptEvent = _PyOS_SigintEvent();
-            switch (WaitForSingleObject(hInterruptEvent, 10)) {
+            switch (WaitForSingleObjectEx(hInterruptEvent, 10, FALSE)) {
             case WAIT_OBJECT_0:
                 ResetEvent(hInterruptEvent);
                 return 1; /* Interrupt */
diff --git a/Python/condvar.h b/Python/condvar.h
index fe6bd74..72b08f9 100644
--- a/Python/condvar.h
+++ b/Python/condvar.h
@@ -242,7 +242,7 @@
      * but we are safe because we are using a semaphore wich has an internal
      * count.
      */
-    wait = WaitForSingleObject(cv->sem, ms);
+    wait = WaitForSingleObjectEx(cv->sem, ms, FALSE);
     PyMUTEX_LOCK(cs);
     if (wait != WAIT_OBJECT_0)
         --cv->waiting;
diff --git a/Python/thread_nt.h b/Python/thread_nt.h
index 938bf1e..bd604fb 100644
--- a/Python/thread_nt.h
+++ b/Python/thread_nt.h
@@ -130,7 +130,7 @@
 DWORD
 EnterNonRecursiveMutex(PNRMUTEX mutex, DWORD milliseconds)
 {
-    return WaitForSingleObject(mutex, milliseconds);
+    return WaitForSingleObjectEx(mutex, milliseconds, FALSE);
 }
 
 BOOL