HP Compaq dc7900 USDT User Manual page 95

Short description
An intermittent encrypt
and decrypt error occurs:
The process cannot
access the file because
it is being used by
another process.
Data loss in removable
storage occurs if the
storage media is removed
prior to completing the
new data generation or
transfer.
During uninstall, if the user
has not initialized the
Basic User and opens the
Administration tool, the
Disable option is not
available and Uninstaller
will not continue until the
Administration tool is
closed.
Intermittent system lockup
occurs after creating PSD
on 2-user accounts and
using fast-user-switching
in 128-MB system
configurations.
EFS User Authentication
(password request) times
out with access denied.
Minor truncation during
setup of Japanese is
observed in functional
descriptions.
EFS Encryption works
without a password being
typed in the prompt.
ENWW
Details
This is an extremely intermittent error
during file encryption or decryption which
occurs because the file is being used by
another process, even though that file or
folder is not being processed by the
operating system or other applications.
Removing storage media such as a
MultiBay hard drive still shows PSD
availability and does not generate errors
while adding/modifying data to the PSD.
After the system is restarted, the PSD
does not reflect file changes that
occurred while the removable storage
was unavailable.
The user has the option of uninstalling
either without disabling the TPM or by
first disabling the TPM (through the
Administration tool), and then
uninstalling. Accessing the
Administration tool requires Basic User
Key initialization. If basic initialization has
not occurred, all options are inaccessible
to the user.
Since the user has explicitly chosen to
open the Administration tool (by clicking
Yes in the dialog box prompting Click
Yes to open Embedded Security
Administration tool), uninstall waits
until the Administration tool is closed. If
the user clicks No in that dialog box, the
Administration tool does not open at all
and uninstall proceeds.
The system may lock up with a black
screen and nonresponding keyboard
and mouse instead of showing welcome
(logon) screen when using fast-switching
with minimal RAM.
The EFS User Authentication password
reopens after the user clicks OK or the
system exits Standby.
Functional descriptions during custom
setup option during installation wizard
are truncated.
By allowing the prompt for User
password to time out, encryption is still
available on a file or folder.
Solution
To resolve the failure:
1. Restart the system.
2. Log off.
3. Log back on.
Do not remove a PSD before data generation or
transfer is complete. This issue is only experienced if
the user accesses the PSD, then removes the hard
drive before completing new data generation or
transfer. If the user attempts to access the PSD when
the removable hard drive is not present, an error
message is displayed stating that the device is not
ready.
The Administration tool is used for disabling the TPM
chip, but that option is not available unless the Basic
User Key has already been initialized. If it has not been
initialized, select OK or Cancel to continue with the
uninstallation.
The root cause is suspected to be a timing issue in low
memory configurations.
Integrated graphics uses UMA architecture taking 8 MB
of memory, which leaves only 120 MB available to the
user. The error is generated when this 120 MB is shared
by both users who are logged on and are fast-user-
switching.
The workaround is to reboot the system and increase
memory configuration (HP does not ship 128-MB
configurations with security modules).
This is by design—to avoid issues with Microsoft EFS,
a 30-second watchdog timer was created to generate
the error message).
HP will correct this in a future release.
The ability to encrypt does not require password
authentication, since this is a feature of the Microsoft
EFS encryption. Decryption will require the user
password to be supplied.
Embedded Security for HP ProtectTools 85