: On Windows servers, the absence of updated CA certificates (like VeriSign or DigiCert) may prevent the OS from verifying the driver's digital signature, causing it to block the installation.
Understanding the root cause is critical for choosing the right fix: : On Windows servers, the absence of updated
The agent service or specific driver files failed to register properly. Missing Certificates: Virtual Machine Standby : Other antivirus software (e
: Secure Boot may be enabled without the proper Trend Micro public keys enrolled, causing the system to reject the driver. Virtual Machine Standby Deep Security 12 or earlier)
: Other antivirus software (e.g., OfficeScan, Apex One, or Comodo) can block the installation or operation of the Deep Security drivers. Installation Corruption
As of 2025–2026, Trend Micro has been migrating Deep Security capabilities into Vision One Workload Security . If you are on a very old version (e.g., Deep Security 12 or earlier), upgrading to a supported release may resolve persistent driver issues.