diff --git a/src/xpra/net/subprocess_wrapper.py b/src/xpra/net/subprocess_wrapper.py
index e3621a65f2..7de726c897 100644
--- a/src/xpra/net/subprocess_wrapper.py
+++ b/src/xpra/net/subprocess_wrapper.py
@@ -315,7 +315,8 @@ def cleanup(self):
 
     def stop(self):
         self.stop_process()
-        self.stop_protocol()
+        #call via idle_add to prevent deadlocks on win32!
+        glib.idle_add(self.stop_protocol)
 
     def stop_process(self):
         log("%s.stop_process() sending stop request to %s", self, self.description)
diff --git a/src/xpra/sound/wrapper.py b/src/xpra/sound/wrapper.py
index 468ce081b8..0c41a44401 100644
--- a/src/xpra/sound/wrapper.py
+++ b/src/xpra/sound/wrapper.py
@@ -189,7 +189,8 @@ def verify_started(self):
 
     def subprocess_signal(self, wrapper, proc):
         log("subprocess_signal: %s", proc)
-        self.stop_protocol()
+        #call via idle_add to prevent deadlocks on win32!
+        glib.idle_add(self.stop_protocol)
 
 
     def state_changed(self, wrapper, new_state):