Hello Ghath,
Kindly provide us with the make and model of the client. Is this the behaviour of all the clients? are they the same make and model as the affected one ?
If you manually install Management Agent first, then without restarting install FDE, does the issue still persist ? Could we do try installing them on the same account without switching them.
Can we confirm if the disk is of a supported type on the client:
Supported and unsupported disk types for Drive Encryption
Following are the supported and unsupported disk types and file systems for Drive
Encryption:
Supported disk types
■ Desktop or laptop disks, including solid-state drives (either partitions or an
entire disk)
■ USB flash disks
■ Advanced format drives with 512-byte emulation mode (512e)
■ FAT32, and NTFS formatted disks or partitions
■ GPTboot disks on MicrosoftWindows 8.x and MicrosoftWindows Server 2012
(UEFI systems only)
The following are the supported Opal v2 compliant eDrives for Drive Encryption:
■ Samsung SSD 840 EVO mSATA
■ Intel SSD Pro 2500
Before installing Symantec Endpoint Encryption 25
Symantec Endpoint Encryption system requirements
Drive Encryption manages these drives and uses the Opal drive's built-in hardware
encryption capability when these drives are used with following laptop models:
■ Lenovo ThinkPad W540
■ Lenovo ThinkPad T540p
■ Lenovo ThinkPad X240
Unsupported disk types
■ Any configuration where the system partition is not on the same disk as the
boot partition
■ Native mode advanced format drives
■ Dynamic disks
■ SCSI drives and controllers
■ Software RAID disks
■ exFAT formatted disks
■ Resilient File System (ReFS)
■ Extended partitions.