Internet Explorer clear saved User Name

In certain websites we receive a dialog window(from browser itselft) which asks us to enter the user name and password. I've entered a user name and I need to clear it from history. I tried lot of options and was not successful. C开发者_如何学Pythonan someone please help me?

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Not really a programming question—try Superuser.

However, if you login again using Basic Authentication and untick the ‘Remember my password’ option, then quit and reload IE, it should be gone.