Runtime error when opening .mxd files in ArcMap caused by the dllcmd32 process associated with EFAX faxing software

Last Published: April 25, 2020

Error Message

When opening an .mxd file in ArcMap, the following error message may occur:

"this application has requested the runtime to terminate it in an unusual way..."


The dllcmd32 process, a process running from EFAX faxing software, generates this error. The dllcmd32.exe is the main executable for the configurable EFAX faxing module that is installed with the HP Laserjet 3100/3150 Jetsuite software.

The program is a non-essential system process, but should not be terminated unless it is suspected to be causing problems. See: WinTask Process Library - dllcmd32 for more information.

Solution or Workaround

There are two possible solutions:

  • Terminate the dllcmd32 process.
  • Remove the EFAX faxing software.

Article ID:000008543

  • ArcMap 8 x

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