Overview

A known issue with a Lexmark Fax Printer driver can cause System Five on Cloud to crash after 10 seconds after signing into the environment.   This Cloud Remote Desktop session will continue to crash after 5 to 30 seconds.


Symptom: This started occurring after a new printer was installed along with a new fax printer driver installation.

Root Cause: Lexmark DLL LMFX1N4Z.DLL 

Detection: This is caused by the Lexmark dll which is LMFX1N4Z.DLL. This is a printer fax driver which gets installed after installing the driver. To confirm the cause:

  1. Open the Event Viewer from the Windows start menu.
  2. Browse through Windows Logs in recent Application events and look for an "Application Error" or "Application Crashing" event.

  4. Check if the crashing error is from the remote application msrdc.exe
  5. The error will explain the faulting module causing the crash in the event log.   In this case, it was the LMFX1N4Z.DLL which is from a recently updated Lexmark Fax driver


Resolution - Replace or Delete

  1. Check the printer list and look for a Lexmark Fax printer.
  2. If this fax printer is required, contact your IT team to replace the crashing printer driver.
  3. If the Lexmark Fax Printer is not required.  Delete the printer.
  4. Once the driver is removed, sign back into System Five on Cloud and monitor for 60 seconds.  The remote desktop session should no longer crash or disconnect.