SUPPORT COMMUNICATION -
HP Notebook PCs - Downgrading the Drive Encryption of an Encrypted Hard Disk Drive Results in Error
NOTICE: The information in this document, including products and software versions, is current as of the Release Date. This document is subject to change without notice.
Attempting to downgrade HP ProtectTools Drive Encryption on an already encrypted hard disk drive (HDD) results in the HDD status being set to "Not encrypted". Furthermore, attempting to decrypt an already encrypted hard drive generates the following error message:
An error occurred when applying changes to Drive Encryption. RESULT 0X80074003(0X80074003).
HP EliteBook 2560p Notebook PC
HP EliteBook 2760p Tablet PC
HP EliteBook 8460p Notebook PC
HP EliteBook 8560p Notebook PC
HP EliteBook 8760w Mobile Workstation
HP ProBook 4230s Notebook PC
HP ProBook 4330s Notebook PC
HP ProBook 4331s Notebook PC
HP ProBook 4430s Notebook PC
HP ProBook 4431s Notebook PC
HP ProBook 4435s Notebook PC
HP ProBook 4530s Notebook PC
HP ProBook 4535s Notebook PC
HP ProBook 4730s Notebook PC
HP ProBook 5330m Notebook PC
HP ProBook 6360b Notebook PC
HP ProBook 6460b Notebook PC
HP ProBook 6465b Notebook PC
HP ProBook 6560b Notebook PC
HP ProBook 6565b Notebook PC
Downgrading HP ProtectTools Drive Encryption while an HDD is already encrypted cannot be performed successully. Version 6.0.80 (and later) of the HP ProtectTools Drive Encryption software actually prevents the downgrade process from being initiated. However, versions that were released before 6.0.80 do not have this built-in safeguard and inadvertently allow the downgrade process to proceed on an already encrypted HDD, which subsequently results in this problem.
If an HDD has been downgraded to a version of HP ProtectTools Drive Encryption prior to 6.0.80, download the most recent version of the software and install it.
NOTE: It is highly recommended to back up your data before upgrading the Drive Encryption software.
Note: A more recent version of this software may be available. Check for updated drivers and software for your computer at
Hardware Platforms Affected: HP EliteBook 2560p Notebook PC, HP EliteBook 2760p Tablet PC, HP EliteBook 8460p Notebook PC, HP EliteBook 8560p Notebook PC, HP EliteBook 8760w Mobile Workstation, HP ProBook 4230s Notebook PC, HP ProBook 4330s Notebook PC, HP ProBook 4331s Notebook PC, HP ProBook 4430s Notebook PC, HP ProBook 4431s Notebook PC, HP ProBook 4435s Notebook PC, HP ProBook 4530s Notebook PC, HP ProBook 4535s Notebook PC, HP ProBook 4730s Notebook PC, HP ProBook 5330m Notebook PC, HP ProBook 6360b Notebook PC, HP ProBook 6460b Notebook PC, HP ProBook 6465b Notebook PC, HP ProBook 6560b Notebook PC, HP ProBook 6565b Notebook PC
Software Affected: Not Applicable
Support Communication Cross Reference ID: IA03011807
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