Index: /trunk/src/VBox/Runtime/r3/init.cpp
===================================================================
--- /trunk/src/VBox/Runtime/r3/init.cpp	(revision 39752)
+++ /trunk/src/VBox/Runtime/r3/init.cpp	(revision 39753)
@@ -331,5 +331,6 @@
      */
 #ifdef RT_OS_WINDOWS
-    SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX);
+    UINT fOldErrMode = SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX);
+    SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX | fOldErrMode);
 #elif defined(RT_OS_OS2)
 # error "FIXME"