We need more clues here.
Is it always happening on the same test?
Is it always on the same VM or will that test fail on any VM?
Is it always with one username/password or for any valid combo?
Does this happen if the test is not running on a VM?
1. Not all the time. It happens sometimes.
2. one thing is sure tests fail on that machine. I need to check on other VM machine whether it happen with other tests running on other VM machine.
3. only with one username/password . There is one more thing - on that VM whenever basic authentication dialog appears we saw the username and password is prefilled - not sure why those text boxes for username /password is not empty.
4. Since this issue is not reproducible . So cannot say whether it happens when running on physical machine. I am using my physical machine to develop the Testcomplete tests and ran but not able to reproduce .
Let me know if you need more information.
-Nishchal
Having 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.
What 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.
