Dear Customer,


Following my previous announcement regarding support for upgrades from EEPC 6.1.x or 6.2.x, I would like to share with you some new information.


During the continuous quality verification cycle of McAfee Drive Encryption (DE), McAfee has become aware of a sporadic issue that can cause Preboot File System (PBFS) corruption during an upgrade from Endpoint Encryption for PC (EEPC) 6.1.x or 6.2.x to DE 7.1.

While the issue is believed to be rare and is recoverable,  McAfee wishes to avoid potential inconvenience to its customers.


When this issue happens, the affected systems may in theory exhibit corruption in any of the files necessary for the good working condition of the PBFS.

This corruption condition is most likely to occur in systems that have slow disk access and can be corrected by executing an Emergency boot.


Please refer to KB81522 for further details about the upgrade issue.


This condition does not affect upgrades from EEPC 7.0.x. Customers wishing to upgrade to MDE 7.1 can minimize the impact of the rollout by performing an upgrade from EEPC 6.1.x or 6.2.x to EEPC 7.0.x and afterwards from EEPC 7.0.x to DE 7.1.


McAfee is working at priority to provide a solution and aims to release a single issue hot fix in the near future. This posting will be updated as soon as we have a more concrete timeline.



With our best regards,

McAfee Endpoint Encryption Product Team