Unable to automate login

I am trying to automate a process on which i have to first log into the portal. But the portal does not have login page instead it uses browser login pop up for login credentials.

I am not able to capture the username text box to enter the user name.

Please suggest how to capture the fields in browser pop up

@nsemwal Can you share the page URL to check it or is it some internal resource?

It’s an internal link won’t be able to share it .

I think you should be able to copy xpaths of the fields, but check if there are any iframes.