I think you mixup two different things. With the LDAP module users can login to your Mendix application using the name and password of their work accounts. If you want to do SSO the you need another module. I would use the SAML module: https://appstore.home.mendix.com/link/app/1174/Mendix/SAML Then your users can autologin. If you only want your users to login with their work credentials you are probably already done if you set the LDAP module up to authenticate users. If that is not working edit your post with what steps you took and what kind of error logs you are getting.
LDAP Module not able to auto sign after you login via your window authentication. You need to open mendix application and login again with LDAP account.
For SAML with Microsoft AD, the AD Server need to configure like this https://www.ispringsolutions.com/articles/ispring-learn-sso-with-microsoft-active-directory-federation-services
hope this help
I tried SAML but I got this error
I filled those fields
When i confgured ldap it went smoothly
They have ldap server and it's connected with share point
And it's connected with the ldap mendix module