Always scan any downloaded file with Malwarebytes or Windows Defender. Prefer sources that provide SHA-256 checksums. And never use an untrusted portable build for production data without thorough testing.
Because Microsoft officially ended support for Visual FoxPro in 2015, the software has entered a state of abandonment by its creator, yet it remains vital to many legacy business systems. The Risks of "Portable" and "Free" Downloads
Distributing or downloading cracked or portable versions violates Microsoft’s end-user license agreements. For businesses and independent developers, using such software creates significant legal and operational liabilities. Legitimate Alternatives and Modern Solutions