Avast Secure Browser Closes within Seconds of Opening

Avast Secure Browser keeps closing with seconds of opening. I’ve tried updating, Uninstalling, and Reinstalling to no avail. I’ve updated Windows 10, attempted a restore, and experimented with both Chrome and Windows Edge. Nothing I have done seems to make a difference. I’m sure that I am missing something, but can not figure out what that might be.
It was working perfectly up until a few days ago. Please help me fix the problem. Thanks.

Anne194

Have you tried to uninstall using removal tool https://download.avastbrowser.com/avast_secure_browser_uninstall.exe (Run as administrator) and install again?
Could you please provide version of browser you have?

Yes, that has been done (several times now). I had hope that would be the solution, but unfortunately not.
As for the browser - I use Windows 10, Google Chrome.

I have not been able to fix this problem. Other than giving up hope, is there a solution to this problem?

Please try this.

Clean install of the Secure Browser:
Maybe it’s time for a clean install of the Secure Browser
Download the installer from here, https://www.avast.com/en-us/secure-browser
Download the Secure Browser Removal tool from here, https://download.avastbrowser.com/avast_secure_browser_uninstall.exe
Save your Bookmarks via the Book Marks Manager if you have custom bookmarks so you can import them when you re-install.
Uninstall Secure Browser via Programs and Features - Reboot
Run the removal tool, reboot, run the installer import your favorites if you saved them.
A video to help with the installation: https://youtu.be/r_VLA0HMLQM
Avast has offered a separate tool to totally remove the Secure Browser if the above instructions don’t work.
You can find that tool here, https://forum.avast.com/index.php?topic=230288.msg1531315#msg1531315
Report back if that’s solved the problem or not.