When logging into multiple systems encrypted with PGP Whole Disk Encryption and using the Single Sign-On feature, you may experience issues with password synchronization.
This is a timing issue with how a Windows client synchronizes a user's domain credentials with the Domain Controller.
If a user has two computers and the passphrase has been changed on one computer, once the user logs in to the other computer, wait for the “Windows needs your credentials” prompt to synchronize the Windows password so both computers will then have the same Windows password for the domain managed computer. Next, have the user logoff the machine, and log back on. This will cause the PGP Password filter drive to then synchronize to the PGP BootGuard.
PGP BootGuard—PGP Whole Disk Encryption’s pre-boot environment.