Drive wont lock

i have a My Book External hard drive that won’t lock! Anybody have this happen to them? Please help!!!

Hi and welcome to the WD community.

Where you able to lock the unit before? There is also an option to auto unlock the drive.

You might find some helpful information on the following links:

If you are using WD Securiry:

http://wdc.custhelp.com/app/answers/detail/a_id/10408/session/L2F2LzEvc25vLzEvdGltZS8xNDE0ODUzMjk1L3NpZC9zUlR6UGs2bQ%3D%3D#show

If you are using WD Smartware:

http://wdc.custhelp.com/app/answers/detail/a_id/3741/session/L2F2LzIvc25vLzEvdGltZS8xNDE0ODU0NTY1L3NpZC9CYW1HVWs2bQ%3D%3D

Yes,I could lock it before.It doesn’t take my password. It’s saying it"s invalid!