“I know what a ransomware is... it's just that I saw that encryption stuff, and it scared me.” Super User · 9 years ago
EFS requires a valid certificate to encrypt files. If the user certificate is missing, EFS will fail.
Perform a full system scan with reputable anti-malware software to ensure no malicious activity is abusing the EFS service. efsui.exe efs installdra
While efsui.exe doesn't have an installdra command, you can manually add recovery agents after encryption:
Here is a step-by-step guide on how to configure a DRA on a non-domain (standalone) Windows machine. “I know what a ransomware is
Get-EfsRecoveryAgent
The command efsui.exe efs installdra represents a manual, GUI-centric method for configuring Perform a full system scan with reputable anti-malware
efsui.exe efs installdra <path_to_certificate>
The command efsui.exe /efs /installdra is an undocumented or semi-documented command used by the Windows Encrypting File System (EFS) to trigger the installation of a Data Recovery Agent (DRA) certificate. While typically managed via Group Policy or the cipher.exe