CS6 is a 32-bit application and will not run on macOS 10.15 (Catalina) or later, including Sonoma and Sequoia, which require 64-bit software. It also lacks native support for Apple Silicon (M1/M2/M3) chips.
The most pressing argument for upgrading is the inevitable obsolescence of the software due to operating system incompatibility. InDesign CS6 was engineered for a different era of computing. As both Apple and Microsoft have updated their operating systems—macOS and Windows—the architectural foundations have shifted away from the environment CS6 was built upon. Modern operating systems no longer fully support the code architecture of CS6, leading to frequent crashes, font rendering errors, and the inability to open legacy files. A designer running CS6 on a new computer is often engaging in a battle against their own hardware. By upgrading, users ensure stability and reliability, removing the constant fear that a critical project will be lost to a software crash caused by an operating system mismatch. upgrade indesign cs6
While it can run on Windows 11, users often report errors during installation and issues with modern display scaling (blurry UI). CS6 is a 32-bit application and will not run on macOS 10