Error 1904: Module C:\Program Files\ArcGIS\Bin\DataGraph.dll failed to register

Last Published: April 25, 2020

Error Message

When installing ArcGIS Desktop or when starting ArcMap and/or ArcCatalog, the following error displays:

"Error 1904: Module C:\Program Files\ArcGIS\Bin\DataGraph.dll failed to register".


This error may be displayed for a few different reasons.

Solution or Workaround

The following is a list of the most common solutions to this problem; however, if the first two solutions do not the work, the third solution should, although it has the most impact on time and resources.

  • Manually register all .DLLs in <ArcGIS install location>\bin. See How To: Register the .DLLs in the ArcGIS Desktop \bin directory for instructions.
  • Run a repair on the ArcGIS Desktop installation.
    1. Insert the ArcGIS Desktop installation CD into the computer CD-ROM drive.
    2. Select Install ArcGIS Desktop.
    3. Select Repair and click Next. Follow the rest of the wizard.
  • If neither of the above solutions work, then the Windows operating system is corrupt. Reinstall the Windows operating system and install ArcGIS Desktop.
Try running a repair on the Windows operating system before reformatting and reinstalling, but the Windows repair may not work.

Article ID:000008615

  • ArcMap

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