Failed to Invoke the Security Expert Suprema Component

Failed to Invoke the Security Expert Suprema Component

The error "Failed to Invoke the Security Expert Suprema Component" is seen when attempting to register a users biometric credential at a Security Expert Client machine.

Figure 1 - Suprema scan errorFigure 1 - Suprema scan error

When doing a registration from the Security Expert Server this error is not seen and the registration is successful.

Product Line

Security Expert


  • Security Expert
  • Suprema Biometric Reader


The Suprema.dll has not been properly registered on the local machine.


First check in C:\Program Files (x86)\Schneider Electric\Security Expert folder and confirm that the three files Suprema.dllBS_SDK.dll, and BS_SDK_V2.dll are all present. If they are not you will need to copy them over from a working installation of Security Expert.

Now run the below commands via an Administrator authenticated command prompt session:

For 64-bit machines

  1. cd C:\Windows\SysWOW64
  2. regsvr32.exe “C:\Program Files (x86)\Schneider Electric\Security Expert\Suprema.dll”

For 32-bit machines

  1. regsvr32.exe “C:\Program Files\Schneider Electric\Security Expert\Suprema.dll”

You should get a pop-up saying the .dll was registered successfully.
Close and re-open the Security Expert client and re-test enrolling a users fingerprint.

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