So the question is summarized as: How to get the domain account of the current computer login in the browser?
If you really want to do this, you can only use a browser plug-in, or use electron or the like to package your website into a desktop application, where you can find a way to read the domain information and pass it to the website.
Or you can change your mind and let the user log in to the domain account in the browser, that is, using LDAP or the like. This obviously cannot achieve your automatic login requirements.
UC can just use LDAP.
So the question is summarized as: How to get the domain account of the current computer login in the browser?
If you really want to do this, you can only use a browser plug-in, or use electron or the like to package your website into a desktop application, where you can find a way to read the domain information and pass it to the website.
Or you can change your mind and let the user log in to the domain account in the browser, that is, using LDAP or the like. This obviously cannot achieve your automatic login requirements.