This document contains the steps for installing and configuring ADFS 2.0 to work with Zoho Vault.
Installing ADFS 2.0:
Running the Powershell Script for configuring ADFS 2.0
Powershell script for configuring ADFS 2.0 can be downloaded from https://www.zoho.com/vault/20616/adfsscript.ps1.

Note:
If you're unable to set the execution policy for RemoteSigned because of domain policy, you might need to set the same policy in your Domain Controller. Refer to this article to set the execution policy on domain controller. https://www.techrepublic.com/blog/datacenter/set-the-powePrshell-executionpolicy-via-group-policy/3305
After running the PowerShell script,
Disabling SAML Authentication
To disable the SAML authentication:
Note: While importing users using the Provisioning App, you will need to set up a default password. Your users can log in to Zoho Vault with this default password. If you're planning to disable SAML Authentication, and wish to authenticate through Zoho, or if your users forget the default password, they can click Forgot Password from the login page to receive an email with details to set up a new password.
Authenticating external users
External authentication is possible only if the AD FS login URL is configured to access from the internet. You will be redirected to a system in your intranet while authenticating, because SAML Authentication works based on browser-based redirection.