Unlock passport

I cannot unlock passport ultra to see what I have on the hard drive.
error states I need a cd

Hello joeyq99,

If you have setup the password on the WD My Passport Ultra drive using WD Security, it is recommended to install WD Security on your computer and try to unlock the drive using it.

To setup the WD Security, you can refer to the link given:
https://support-en.wd.com/app/answers/detail/a_id/13880

If the issue persists, you should try connecting the drive on different computer as it may be helpful to detect the WDUNLOCKR to unlock the drive. If you already know the password, you can unlock the drive using it.