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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 Authenticode-signed Windows installer from this website (Download the installer). 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.

The offline MSI is Authenticode-signed. During install, Windows shows the publisher from the digital signature — confirm it matches Green 18 Enterprises. You can also right-click the downloaded MSI, choose Properties, and open the Digital Signatures tab to check the signature.

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

The SHA-256 below matches the official 6.1.0 MSI (QuattroProConverter-6.1.0.msi). The same hash is published in the WinGet 6.1.0.0 manifest. Compare it to the file you downloaded; do not rely on hashes from unofficial sites.

File
QuattroProConverter-6.1.0.msi
SHA-256
DE683639709686E840531557A52D5262323A7259030A52EC5000CD7F247248AF
VirusTotal
Open VirusTotal report — current engine results for this hash

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.