Salesforce ADFS get federation ID from Active Directory

Since SSO with Salesforce is case sensitive you need to get the information directory form the Domain Controller

Logon to Domain Controller

Import-Module activedirectory

Get-ADUser -Filter {EmailAddress -like “*lastname*domain.com”} -Properties EmailAddress | Select Name, EmailAddress

If you need assistance setting up SSO – https://developer.salesforce.com/page/Single_Sign-On_with_Force.com_and_Microsoft_Active_Directory_Federation_Services