I have a Windows Server 2012 R2 datacenter machine with that I created the Active Directory Federation Server Environment. After completing the installation and configuration, I tried enabling the IdpInitiatedsignon property but the property isn't available in the properties list. I have checked with some sites and they suggested updating OS and I have tried that but the same problem repeats. If there are any ways to solve this issue kindly suggest them.
I have attached the picture of the properties list that I got with 'Get-AdfsProperties' where EnableIdpInitiatedSignon isn't available.
It's only available in ADFS 2016 and later.
This page is available by default in the AD FS 2012 R2 and earlier versions.