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Is this download safe?

Straight answers about who publishes Quattro Pro Converter, how the Microsoft Store and MSI installs relate, what Windows may show, and how conversion stays on your PC.

Publisher

  • Product: Quattro Pro Converter
  • Website: quattroproconverter.com
  • Publisher: Green 18 Enterprises (Arizona, est. 1991)
  • Parent site: green18enterprises.com
  • Current version: 6.1.0
  • Privacy model: conversion runs locally on your Windows PC — spreadsheet files are not uploaded to Quattro Pro Converter servers
  • Website trial: 10 file conversions (official trial count from this site; a Microsoft Store listing description may still show an older number)

Microsoft Store vs MSI

Both paths install Quattro Pro Converter for Windows 10 or 11. Pick whichever fits your PC or IT policy:

  • Microsoft Store — install from the Store listing (product ID XPFCTMZWZBQ4W0). Store delivery and updates follow Microsoft's Store flow.
  • Offline MSI — download the Windows installer from this website (/api/download). Useful for air-gapped machines, scripted installs, or when you prefer a direct installer.

The free trial is the same either way: up to 10 conversions. For non-Windows browsers, see Download Help.

Verify the publisher

Download only from quattroproconverter.com or the official Microsoft Store listing linked above — not from third-party reupload sites.

During install, Windows may show a publisher name. If a name appears, confirm it matches Green 18 Enterprises. This page does not claim that the MSI is code-signed; treat any certificate or publisher details Windows displays as what you should verify on your machine.

Windows SmartScreen ("Windows protected your PC")

New or less-downloaded desktop installers often trigger Microsoft Defender SmartScreen. That warning means Windows has not built reputation for the file yet — it is not by itself a malware verdict.

  1. On the SmartScreen dialog, choose More info.
  2. Confirm the app name is Quattro Pro Converter and, if shown, the publisher is Green 18 Enterprises.
  3. Choose Run anyway only if you downloaded the installer from this site or the official Store listing.

Checksums & VirusTotal

Published SHA-256 checksums and VirusTotal links for the MSI are coming soon. We will not invent hashes or third-party scan URLs. Prefer the Microsoft Store install if your organization requires a Store-sourced package while those details are unpublished.

System requirements

From the live product PAD listing for version 6.1.0:

  • Windows 10 or Windows 11
  • Windows 10 or later. No additional software required; LibreOffice conversion components are bundled with the installer.

Source: /PAD.xml

Local conversion & privacy

Quattro Pro Converter processes .qpw, .wq1, .wq2, .wb1, .wb2, and .wb3 files on your computer. Spreadsheet contents are not uploaded for conversion. For the full privacy policy, see Privacy & Security.

Support

Questions about install warnings, licensing, or conversion? Email support@quattroproconverter.com. We do not publish a street address or phone number on this page.