How to import a certificate using powershell

Question

We are creating a script to automatically create a certificate. We are able to get through all of the stages but when we try to import the certificate into the store we are having issues. The certificate does get installed into the WSUS -> Certificate Store but the private key is not associated. If we do it manually it works just fine.

The following code represents the section to import the certificate into the store:

$cert = new-object system.security.cryptography.x509certificates.x509certificate2 c:\lup.crt
$store = New-Object System.Security.Cryptography.X509Certificates.X509Store WSUS, LocalMachine
$store.Open([System.Security.Cryptography.X509Certificates.OpenFlags]::ReadWrite)
$store.Add($cert)
$store.Close()

I am still on the learning curve of powershell and the addition of certificates has made this difficult. What am I doing wrong that does not allow the private key to be associated when the certificate is imported to the wsus store?

UPDATE

So I have updated my code with what Neossian has suggested and it does work. However, I noticed it does not delete the private key out of Enrollment Requests I can delete this manually but why is it not deleted as it would be if I were to import the certificate manually?

Neossian · Accepted Answer · 2013-05-01 13:49:07Z

3

Try running:

certutil -repairstore WSUS "SerialNumber"

Where the "SerialNumber" is the serial number of the imported certificate.

answered May 1, 2013 at 13:49

Neossian

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2 Comments

JMeterX Over a year ago

That worked, but do you know why the repair needs to be run??? If it needs to be run every single time the code kicks off I will have to find a way to grab the serial number of the certificate so that command can be run.

Lucas Over a year ago

This doesn't seem like it should work, but it does... Where does it get the private key from?

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