title: VB & C++ application crashing without any clue
body: <p>Apologies, this may not be a good question.</p>
  <p>I have a VB based UI application running, supported by C++ modules through COM.</p>
  <p>a month before it started to close randomly without any clue. I initially analyzed in perspective of a application crash and expected to see Dumps and Application/System event log entries. I have prior experience in application crash debugging. tried registry configurations (Like, CorporarteWerServer for application hang, LocalDumps and all that).</p>
  <p>But no luck.</p>
  <p>End user says they don't see any popup like &quot;This application is not responding with options close/wait&quot;. The application just closes down without any prompts.</p>
  <p>We have logging enabled where we intentionally close the application using exit(). So it is not closing formally.</p>
  <p>User does not have testing environment where we can install debugging tools and monitor.</p>
  <p>I have verified for insufficient memory and antivirus software and they are fine.</p>
  <p><strong>So, Is there any cases where an application can just simply close/crash without any prompts, logs, dumps ?</strong></p>
  <p><strong>Please suggest if I am missing something. Also, is there any built-in windows tools to monitor ?</strong></p>