Setting a non-installed browser as default?
- Download Vivaldi setup .exe file. Open it with 7ZIP. Inside the installer (in screenshot Vivaldi.1.11.917.39.exe) there is another vivaldi.7z file, also open that. Extract the Vivaldi-bin folder from vivaldi.7z.
- In that Vivaldi-bin folder, you find the main browser executable vivaldi.exe, open it. Here you get the standalone browser. You can copy the vivaldi-bin folder to any external drive.
- Open vivaldi://settings in vivaldi.exe. Click on 'Set as default' button.
- Now open Control Panel > All Control Panel Items > Default Programs > Set Default Programs, click on Vivaldi and 'set this program as default' option. Now vivaldi is set as your default browser.