Hello,
Thank you for using Microsoft products and posting to the community.
Based on your description, it seems that there are certain files left from another installation.
How did you install Edge, is it via the system's package manager, via a container package, or installed manually?
Also, there is an issue on GitHub when Chromium-based browsers are running in certain conditions. Please try going to your Edge config folder, and delete the files starting with "Singleton". See whether the issue persists.
Disclaimer: Microsoft provides no assurances and/or warranties, implied or otherwise, and is not responsible for the information you receive from the third-party linked sites or any support related to technology.
Please feel free to let me know if you have any further updates, thanks.
Best Regards,
Johann - MSFT | Microsoft Community Support Specialist