Since you cannot install the standalone .exe browser on 8.1, the intended way to get the DuckDuckGo experience is through the DuckDuckGo Privacy Essentials extension. Open your current browser: (Chrome, Firefox, or Microsoft Edge). Go to the Extension Store: Search for "DuckDuckGo Privacy Essentials."
This gives you the same tracker blocking, private search, and "Fire" button – inside your existing browser. duckduckgo browser download for windows 8.1
If you cannot download the specific browser software, the next best thing is to ensure your existing browser uses DuckDuckGo by default. This gives you the core benefit of the product—untracked search results—without the compatibility headaches. Since you cannot install the standalone