Password Vault Issue

Does anyone know what causes a glitch in the password vault operation when it is used from outside Quicken for automatic scheduled one-step updates? I just do not seem to be able use this feature. Although the Password vault works properly when I use it within Quicken, when I schedule automatic one-step updates I am prompted for the password at the scheduled time when I do not have the software loaded in memory, I enter the correct password (and I have doubled checked that I am entering the correct password - case and all) and a message appears that it is the incorrect password, etc. I have one more opportunity to enter the correct one and when I do, I'm told it is incorrect and the update will not proceed.