: QuarkXPress 8.5 was designed for Windows XP/Vista/7 and older Mac OS X versions (like Snow Leopard). It is highly unlikely to run stable on Windows 11 or macOS Sonoma/Sequoia without significant emulation or virtual machines. 2. Legal Ways to Access Legacy QuarkXPress
QuarkXPress 8.5 (2010): A Technical Overview QuarkXPress 8.5, released in November 2010, served as a significant maintenance and feature update to the QuarkXPress 8 platform. While the original version 8 launched in 2008, version 8.5 introduced critical modernization features and expanded global compatibility. Core Features and 2010 Enhancements QuarkXPress 8.5 -2010- Key -App--MULTi- Download
The software incorporated the updated PANTONE PLUS color libraries released earlier in 2010, ensuring color accuracy for print production. : QuarkXPress 8
The term "MULTi" could imply they need a version that works on multiple platforms. QuarkXPress was traditionally for Mac, but there was a PC version in the past. So maybe they want the multi-platform version. But even then, they'd have to consider the OS compatibility. Legal Ways to Access Legacy QuarkXPress QuarkXPress 8