NMC Security Wizard CLI error -20 "This type of opn.not available" for CA signed certificate import

[darxis]

I am trying to configure my APC UPS SRT8KRMXLI built-in NMC2 and SmartSlot NMC3 web interfaces to use a CA-signed SSL certificate for web access. For this I am using the recommended NMC Security Wizard CLI tool v1.0.1. My Certification Authority is Microsoft Windows Server 2022 CA.

I am using the following commands:

NMCSecurityWizardCLI.exe --csr -o xxx.mydomain.com -n xxx.mydomain.com -c US -d xxx.mydomain.com
NMCSecurityWizardCLI.exe --import -o xxx.mydomain.com -s xxx.mydomain.com.cer -p xxx.mydomain.com

The first command runs fine and creates a certificate signing request file (xxx.mydomain.com.csr) that I upload to my CA for signing. Then with the xxx.mydomain.com.cer certificate signed from my CA I run the second command with the --import argument which returns the following error:

Unhandled Exception: cryptlib.CryptException: -20: This type of opn.not available
at cryptlib.crypt.ImportCert(Byte[] certObject, Int32 certObjectOffset, Int32 certObjectLength, Int32 cryptUser)
at cryptlib.crypt.ImportCert(Byte[] certObject, Int32 cryptUser)
at NMCSecurityWizardCLI.Program.ImportSignedCSR(String sCertFile, String sKeyFile, String sOutFile)at NMCSecurityWizardCLI.Program.Main(String[] args)

I have tried v1.0.0 and v1.0.1 of the CLI tool, both returns the error above.

PS: I tried the GUI tool and it works fine