Adobe InDesign 2021 (version 16.4.0.55) is an older release and is no longer available for direct download through the standard Adobe Creative Cloud "Other Versions" menu, which typically only supports the current version and one prior year.
: Minimum 8 GB (16 GB is highly recommended for professional use). Storage : At least 4 GB of available hard-disk space. adobe-indesign-2021-v16-4-0-55-full-version-download
: Users have reported success obtaining direct download links for retired versions by speaking with an agent. Visit the Adobe Contact Page . Adobe InDesign 2021 (version 16
Check the entry, click the three dots (...), and select Other versions . Technical Requirements (Version 16.4) : Users have reported success obtaining direct download
: Check if it is hidden in your settings. Open the Creative Cloud app. Go to Preferences > Apps . Enable the "Show older apps" toggle at the bottom.
: Hold the Ctrl (Windows) or Cmd (macOS) key while clicking "About InDesign" to see detailed build information.