ArcGIS Enterprise 11.3: An unexpected error occurred while unpacking file(s). Check for missing volume file(s)

Error Message

Starting with ArcGIS Enterprise version 11.3, there are two installer components for both ArcGIS Server and Portal for ArcGIS, .exe and .exe.001. When unpacking either of these products just with the .exe file (ArcGIS Server #1. or Portal for ArcGIS #1 ), the following error message is returned.

An unexpected error occurred while unpacking file(s). Check for missing volume file(s). Error code: 1 -2147467259

An example of this message is shown in the image below.

Cause

The ArcGIS Enterprise self-extracting package consists of two files with .exe and .exe.001 extensions. The .exe.001 file (ArcGIS Server #2 or Portal for ArcGIS #2 ) is missing from the same folder.

Solution or Workaround

To extract the ArcGIS Enterprise 11.3 package, ensure both files (.exe and .exe.001) are in the same folder.