Please refer to the related article, Removing Endpoint Encryption Full Disk and File Folder Functionality and Related End of Life (EOL).
Customers who are still using Full Disk Encryption are advised to follow the guidelines from the article, Migrating Full Disk Encryption (FDE) agents to Encryption Management For Microsoft BitLocker. Make sure that the disks for these agents are decrypted before performing the migration.
For support assistance, please contact Trend Micro Technical Support.