Error Code 151 and Error Code 161 occur if the root certificate is not up to date on the system.
The root certificate is needed to verify the digital signature on the Printer driver DLLs.
Normally, modern operating systems, such as Windows 11/10 and Windows Server 2025/2022/2019/2016, update the Root Certificate automatically.
Note: If Windows does not have an active internet connection, then Windows cannot update the Root Certificate automatically.
To resolve Error Code 151 and Error Code 161 on the problematic computer, you must install the Root Certificate manually by performing the steps below:
Download the latest Root Certificate
Open the Start menu, type certmgr.msc, and hit Enter.
In the certmgr window, go to “Third-Party Root Certification Authorities\Certificates” and check that you can find the Sectigo Public Code Signing Root R46 certificate:
If you see the certificate, skip to step 7.
If you do not see the certificate, go to step 4.

Please save the certificate from our link above to a folder on the problematic system, right-click on Sectigo Public Code Signing Root R46.cer, and click Install Certificate.
In the Import Wizard, select “Local Machine”, click Next.

In the next dialog, select “Place all certificates in the following store”, click Browse, and select “Third-Party Root Certification Authorities”:

Open the certmgr.msc window again and check that the certificate appears in the list. You can refresh the list by pressing F5.
Right-click on the installed certificate and select Properties:

Check that the certificate is enabled and click OK:

To check that the system can validate the certificate, please
navigate to
c:\Program Files\Black Ice Software
LLC\<<YOUR PRINTER DRIVER>>\RegisterProduct\eLicensex.dll
Right-click on eLicensex.dll, select
Properties > Digital Signatures > click on the signature in
the list > Details:
The dialog should display “This digital signature is OK.”

Please restart the computer, and then print twice to the Black Ice Printer Driver to initiate a registration validation.
Open the Printer Manager and see if Error Code 151 and Error Code 161 no longer occur.