This installation of MapObjects has an invalid or missing file (Moe.dll)

Last Published: April 25, 2020

Error Message

When installing the professional version of MapObjects after having an evaluation copy installed, the following error is displayed:

"This installation of MapObjects has an invalid or missing file (Moe.dll). Please reinstall MapObjects."


Moe.dll is included with only the evaluation copy of MapObjects; the full version does not include this file.

If a project originally built with the evaluation copy, it will reference this .DLL.

Solution or Workaround

Completely uninstall the evaluation copy of MapObjects and then install the professional version. Refer to link in the Related Information section below.

Be sure to complete step 6 from the linked article and remove the map control from the Form. This is a necessary step to fix this particular error.

    Article ID:000008160

    • Legacy Products

    Get help from ArcGIS experts

    Contact technical support

    Download the Esri Support App

    Go to download options

    Related Information

    Discover more on this topic