Dell Data Protection | Encryption Manual de instalación descargar pdf (Pagina 75)

Installation Guide 75

Decryption and Uninstallation Tasks

The user performing decryption and uninstallation must be a local or domain Admin user.

When using

System Data Encryption (SDE)

User

, or

Common

encryption, file decryption optionally occurs at

uninstallation if you choose to install the Encryption Removal Agent, enabling you to decide whether or not to decrypt

files.

When using HCA encryption, all HCA-encrypted drives must be decrypted prior to uninstallation. The Encryption

Removal Agent will not decrypt HCA encrypted drives. To decrypt HCA drives, apply a policy of Hardware Crypto

Accelerator (HCA) = False. To decrypt secondary HCA drives, from the Home tab, click Decrypt Disk. Once complete,

initiate the uninstall process.

Best Practices

Back up all data.

To reduce decryption time, run the Windows Disk Cleanup Wizard to remove temporary files and any other unnecessary

data.

Disable UAC. UAC may prevent uninstallation of Personal Edition.

Plan to decrypt overnight, if possible.

Turn off sleep mode to prevent an unattended computer from going to sleep. Decryption cannot occur on a sleeping

computer.

Shut down all processes and applications to minimize decryption failures because of locked files.

Restart and authenticate to Windows.

Create an Encryption Removal Agent Log File (optional).

Uninstall using the process in the following section.

IMPORTANT

- Periodically check the Encryption Removal Agent in the Services Panel if decrypting

SDE, User, or

Common encrypted files

. If the Encryption Removal Agent Service exists, then decryption is still in progress. See Check

Encryption Removal Agent Status for more information.

Create an Encryption Removal Agent Log File (Optional)

Before beginning the uninstall process, you can optionally create an Encryption Removal Agent log file. This log file is

useful for troubleshooting an uninstall/decryption operation. If you do not intend to decrypt files during the uninstall

process, you do not need to create an Encryption Removal Agent log file.

Create the following Windows Registry entry on the computer targeted for decryption to create an Encryption Removal

Agent log file.

Click

All Programs > Run

from the Windows Start menu.

Enter

regedit

in the Open: field.

Go to HKLM\Software\Credant\DecryptionAgent.

Right-click in the right pane and select

New > DWORD Value

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