Champion Level 3Having the username/password filled in automatically may be another clue. What I would do at this point is install TestComplete on that particular VM and run the same test in Debug mode so you can step through it and watch what is happening instead of just seeing the end result.
Actually, it sounds like at some point in time, someone "saved" the username/password in your browser so you may not get the dialog if the browser authenticates in the background. Try deleting all saved passwords on that browser on that machine and try again.
Champion Level 3What tristaanogre suggested may work. If not, it really doesn't take very long to install TC on that machine. It's a big help in troubleshooting if you can see the UI and the logs. It's not a licensing issue either. You can install TC anywhere. The licenses just control how many people can use it at once.
When the script run , it launche the firefox brower and type the URL in browser.
authentication pop up dialog come which is expected . But i am confused why we the username and password in authentication dialog is already prefilled. however in the script we are passing the username and password to those username and password textfields.
Let me know if you need more information
Champion Level 3Go into Firefox where the failure is happening and delete any saved logins you find and then try the test again.
https://support.mozilla.org/en-US/kb/password-manager-remember-delete-edit-logins
