diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c
index db61569..fdaa0bc 100644
--- a/src/backend/postmaster/postmaster.c
+++ b/src/backend/postmaster/postmaster.c
@@ -4970,6 +4970,18 @@ pgwin32_deadchild_callback(PVOID lpParameter, BOOLEAN TimerOrWaitFired)
 		exitcode = 255;
 	}
 
+	/*
+	 * Expect error code 128 can only occur if the process failed to
+	 * start up, and we know this is safe from shared memory corruption,
+	 * so log it and set it back to zero.
+	 */
+	if (exitcode == ERROR_WAIT_NO_CHILDREN)
+	{
+		write_stderr("process %lu died with exit code 128, ignoring",
+					 childinfo->procId);
+		exitcode = 0;
+	}
+
 	if (!PostQueuedCompletionStatus(win32ChildQueue, childinfo->procId, (ULONG_PTR) exitcode, NULL))
 		write_stderr("could not post child completion status\n");