When you reset your password at ninernet.charlotte.edu, you will need to take additional steps to sync your new NinerNET password with the local Windows password when your university computer is off campus.
Instructions for Mac computers can be found in this FAQ.
After resetting your password, login to the VPN using your new password - see this FAQ about VPN Note - you may see the below notification
Lock your computer by... a. Hitting the Windows key + L OR... b. Hitting CTRL + ALT + Delete then Lock OR... c. Clicking Start > the University crown icon > Lock
Hit CTRL + ALT + Delete to get to the login
Enter your NEW password - your new password will now work to log you into your University computer