For most users, even a basic modern image viewer like (free) or FastStone Image Viewer (free for non-commercial) offers better security and format support than any ACDSee version from before 2010.
: Search for "Full" or "Offline" installers rather than the small executable files. Users have found that the full installers are more likely to respect the version number without pushing for a paid upgrade. Common Installation Issues Visual C++ Errors acdsee 26002224 older versions for windows