Downloading is possible through official Adobe channels only if you hold a valid subscription. For new users, the safest path is a current Creative Cloud plan ($20.99/month for individuals), which gives you access to both the latest version and legacy installers.
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You must follow their specific "Important Instructions" (usually clicking a specific Adobe link first to set a session cookie) or the download will return an "Access Denied" error. Availability: Downloading is possible through official Adobe channels only