Forgotten your password? Use ResetPassword instead.
This form has a bug. To change your password, first log in and navigate here. While on this page, log out at upper left. Log in again. You should be looking at this page. Make sure your TWiki Login Name is correctly filled in (if not change it to the correct login name), fill in the Current Password field with the password you just used to log in, and enter your new password in the New Password / Retype New Password fields. Click "Change Password".
Please go to Edit menu, choose Preferences, click on the Advanced tab, click on the Network tab, and click Clear Now. Then refresh this page before proceeding to change your password.