The new Microsoft Edge Chromium browser doesn’t provide native support for ClickOnce as of version 81.0.416.6.
It will by default NOT work to launch a Smart Office ClickOnce install point link in Edge Chromium.
To enable ClickOnce support in Edge Chromium:
- Enter edge://flags link in Edge Chromium browser.
- Scroll down to ClickOnce Support setting and select ‘Enable’ from the dropdown list.
- Restart the browser.
Note: This setting will be overridden if your organization configures the "Allow users to open files using the ClickOnce protocol" policy. – Windows The Edge Chromium will always prompt the user before launch of a ClickOnce link because Chromium doesn't rely on the Windows Security Zones.