If you actually need to a safe download for 13.0.40, note that SAP (now part of Broadcom) officially provides older versions to licensed customers via the SAP Support Portal under "Software Downloads." Unofficial third-party sites carry security risks.
: SAP also maintains a public-facing repository at origin.softwaredownloads.sap.com for various runtime and engine components. Key Components of Version 13.0.40 Crystal Reports 13.0.40 Download
The junior sysadmin, Alex, spent 4 hours searching vendor sites, only finding newer versions (13.0.35, 13.0.43). Each one failed with a cryptic "Missing dependency: crdb_odbc.dll version 13.0.40." If you actually need to a safe download for 13