Ordinal Not Found: The ordinal 3873 could not be located in the dynamic link library (SSLEAY32.dll) – LP360

After installing LP360 for ArcGIS, when you try to run the program it throws an error stating, “Ordinal Not Found: The ordinal 3873 could not be located in the dynamic link library (SSLEAY32.dll)”. Note: The ordinal number and the DLL may be different in the specific error message you see.

Figure 1: Ordinal Not Found error, after downloading LP360 for ArcGIS.

Probable Resolution #1:

The error is likely occurring after you run the installation file and select the "Run LP360" checkbox when the install is complete. This ordinal error should not affect the LP360 extension enabled through ArcMap.

To run the standalone version of LP360, please download and run the LP360 64-bit installer.