Add Help Desk Link
Applies To: Windows Server 2016, Windows Server 2012 R2
To Add a Help Desk Link
To add the help desk link that is displayed on the sign-in page, use the following Windows PowerShell PowerShell cmdlet and syntax.
Set-AdfsGlobalWebContent -HelpDeskLink https://fs1.contoso.com/help/ -HelpDeskLinkText Help
linkText parameter in this cmdlet is not required unless you use another value than the default, which is Help. The advantage of using the default is that they are localized to all client locales. After the page is customized, the customization takes precedence; therefore, you should customize for all languages that you want to support.