Hello ,
Good to see you in Microsoft Community.
Firstly, could you let me know the specific system version (OS Build)? You can check it by pressing Win + X > System > Windows specifications*, click “Copy” and paste it in your next reply*.
You can remove the search engine in the settings of Microsoft Edge browser (Provided that the search engine to be removed is not the current default search engine).
I tried to install the program according to the official installation steps of DuckDuckGo, and then in the Microsoft Edge browser I can normally select DuckDuckGo as the default search engine, as shown in the image below.
You can follow the steps below:
- Repair the Microsoft Edge browser "Win" logo key + "I" open Windows Settings > Apps > Apps & Features > Microsoft Edge > Modify > Repair*.*
- Disable other plug-ins with similar functionality in the Microsoft Edge browser, as well as other applications with similar functionality installed within the system.
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- Reinstall the DuckDuckGo by following the steps provided by the DuckDuckGo.
If anything is unclear, please do not hesitate to let me know.
Best Regards,
Mosken_L - MSFT | Microsoft Community Support Specialist