Thank you for your feedback

Firewall Applications Prevent Network Communication: A List of Possible Blocked Processes and Lexmark Ports

Document ID:SO4852


Cannot communicate; Unable to print; Unable to scan; Unable to associate; Unable to authenticate; Scanback failure; Lmabcoms error; scanwiz; Process blocked; Port blocked; Lexmark application will not communicate; Printer Communication System has encountered a problem and needs to close; Uanble to perform scan; Failed to locate the printer you specified; Ask print greyed out; Firewall prevents communication; Cannot print; Cannot create port; Cannot scan; Cannot discover printer; Status messenger not working


Microsoft Windows Vista; Microsoft Windows XP Professional x64 Edition; Microsoft Windows Server 2008; Microsoft Windows Server 2003; Microsoft Windows XP; Microsoft Windows NT, Terminal Server; Microsoft Windows 2000 Advanced Server


What you will see

A Lexmark printer proccess is blocked by a certain Microsoft firewall client ver. 4.0.3441.633.  Click here for illustration.  

Possible symptoms and error messages:

  • - Communicatication failure error
  • - "Printer Communication System has encountered a problem and needs to close"

  • - Microsoft Error report which contains LMabcoms.exe and LMabipl.dll file names 

  • - "Failed to locate the printer you specified"

  • - A grey "Ask Printer" under PropertiesInstall Options

  • - Other printers utilizing Lexmark port monitor or Lexmark enhanced communications software suffer similar errors. 

  • - Other process errors that may involve any of the processes utilized by the MFP or printer. See table below.   

Before you begin

Understand the different types of firewalls: 

  • - 3rd party software-based firewalls

  • - Operating system-based firewalls

  • - Computer hardware BIOS firewalls

  • - Router hardware firewalls

  • - VPN firewalls

Suggested Fixes

Updating the MS Firewall Client to version to 4.0.3442.654 resolved this issue.  So, updating your firewall application is one possible solution for a blocked process.
Otherwise, reference the table below and make sure that the following processes are successully added to your firewall application's exceptions list.  

Primary Processes and Ports Table ('09)

InstallGui.exeUDP 5353Installer
pssu.exe (print server setup utility)UDP 9300 or 9340print server (TCP/IP) setup utility
Application process 
NOTE: Varies by network TWAIN compliant application.
HTTP or HTTPS post - port 80Network TWAIN
scanwiz.exeHTTP or HTTPS post - port 80Scanback Utility
lmabcoms.exeUDP 9200Discovery and Port Creation
lmabcoms.exeTCP 9400Printing (Enhanced TCP/IP Port)
lmabcoms.exeUDP 9300 or 9340Bidi communication

Related Articles

Contacting Lexmark

If you need additional assistance, please contact Lexmark Technical Support. NOTE: When calling for support, you will be asked for your machine/model type and serial number (SN).
Please call from near a computer and printer in case the technician on the phone asks you to perform a task involving one or all of these devices.

Please enter the email address you would like to send a copy of this page to.