When clicking on an SSO link while impersonating another user, you may notice the page just refreshes and you are unable to access the site through the link.
SSO's can only be access while logged in as a user who has access to them and not impersonating. Impersonating another user will disable all SSO links within the software for security. When you click a link while impersonating a user, the page will refresh and you will not be taken to the SSO link because of this.
In order to access/troubleshoot an SSO link for a user, you will need to obtain their Username and Password and log in as them.