Remember: The strongest feature of ESET’s password protection is that you cannot bypass it easily . That same feature is a headache when you forget the password—but it is also what keeps real threats from disabling your antivirus.
If you are locked out of a device encrypted with ESET Full Disk Encryption, you must use a Recovery Password Recovery Data file Managed Systems
It does not "decode" or show the old password; it simply clears it so you can set a new one. ESET Knowledgebase 2. ESET Encryption Recovery Tool For users of ESET Full Disk Encryption (EFDE) ESET Endpoint Encryption