Enhanced Security Browser Settings

When enhanced security configuration is enabled in the browser, Kahua cannot launch.

To address this issue in Microsoft Edge, add an exception for Kahua by following the steps below:

In Microsoft Edge, select Settings and more > Settings > Privacy, search, and services.
Verify that Enhance your security on the web is turned on.
Under Enhance your security on the web, select Manage enhanced security for sites.
Under Never use enhanced security for these sites, select Add a site.
Type in the full URL [*.]kahua.com
Select Add.

Reference: Microsoft article