Login prompts are browser specific. Internet Explorer automatically tries to log in as the currently logged on Windows user. Firefox and Chrome will, by default, prompt for credentials.
- If IE is prompting for credentials, select Tools/Internet Options/Security/Custom Level and, under User Authentication, uncheck "Prompt for user name and password".
- To prevent Firefox from prompting for credentials, follow these instructions: http://markmonica.com/2007/11/20/firefox-and-integrated-windows-authentication/
- To prevent Chrome from prompting for credentials, follow these instructions: http://stackoverflow.com/questions/7800938/how-to-enable-auto-logon-user-authentication-for-google-chrome