Creo 7 is instantly returning a "Windchill Authentication Failed" error when trying to establish a new server connection.
I have cleared all of the cached password information set the browser type to "chromium_based".
I am able to connect from Creo 3 and a web browser.
I am using a freshly updated license of Engineer III.
What version of Windchill are you running?
I am guessing 11.1 M020 with CPS11 at a minimum as that is the oldest version of 11.1 that supports Creo 7.