Experience Sitecore! | SIF certificate error: Cannot process argument transformation on parameter 'Signer'. Cannot convert the "System.Object[]" value of type "System.Object[]" to type "System.Security.Cryptography.X509Certificates.X509Certificate2"

Experience Sitecore!

Martin Miles on Sitecore

SIF certificate error: Cannot process argument transformation on parameter 'Signer'. Cannot convert the "System.Object[]" value of type "System.Object[]" to type "System.Security.Cryptography.X509Certificates.X509Certificate2"

Just in case you are facing the certificate error while installing Sitecore 9.0 update 2 with SIF 1.2.1 as step CreateSignedCert : NewSignedCertificate, as below:

Install-SitecoreConfiguration : Cannot process argument transformation on parameter 'Signer'. Cannot convert the "System.Object[]" value of type "System.Object[]" to type "System.Security.Cryptography.X509Certificates.X509Certificate2".


The issue is coming from having the certificate already in a system, so you might manually delete that those from Microsoft Management Console (mmc.exe from Windows start menu).

In my case, I had several certificates named DO_NOT_TRUST_SitecoreRootCert installed under Certificates - Current User - Trusted Root Certification Auhorities- Certificates, deleting them helped progress.


Hope this helps!

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