If you have configured your Sisense instance as a sub domain using SSO, and the domain name includes an underscore (example: mysite_website.com), then accessing Sisense using an Internet Explorer 11 browser will fail. It is therefore recommended not to use an underscore in the domain name.
The site domain is configured in the Site Binding settings and in the the Sisense web admin. To learn more about how to configure SSO in Sisense, click here.