I have removed all stored passwords in the vault on the client computer, i have made new profiles on the client computer but yet it still asks for the username and password when you launch outlook. Even then it shows the wrong username and password when it pops up. Everyone else in the office is not having any issues connection to exchange nor asking for username and password at launch. The accounts on the domain is not locked ether as other clients are connected to it. I have ran cleaners for malware and found nothing.