Once installed, you can confirm the exact build number (16.4.0.55): : Go to Help > About InDesign . On macOS : Go to InDesign > About InDesign .
: Compatible with Windows 10 (64-bit) or macOS 10.15 (Catalina) and newer. How to Verify Your Current Version adobe-indesign-2021-v16-4-0-55-full-version-download
If you have a legitimate business or technical need for this specific version (such as plugin compatibility or client requirements), use these official channels: Once installed, you can confirm the exact build number (16