Create a self signed certificate on Windows Server 2016 with PowerShell

I guess today is PowerShell day. I needed to create a quick self signed certificate on a Windows Server and didn’t care to go through the normal process. Here’s the snippets you need.

New-SelfSignedCertificate -DnsName server.domain.tld -CertStoreLocation cert:\LocalMachine\My

This command will spit out the Thumbprint of that certificate which we will need in the next command. Note, that this is a 1 year certificate.

Now let’s export the certificate.

 $CertPassword = ConvertTo-SecureString -String “SomeStrongPassword” -Force –AsPlainText 
Export-PfxCertificate -Cert cert:\LocalMachine\My\3579B7928D895B21CAECfe2F6BE1A6BCCA92C31 -FilePath C:\server.domain.tld.pfx -Password $CertPassword 

Then we just need to export the public key.

Export-Certificate -Cert Cert:\LocalMachine\My\3579B7928D895B21CAECfe2F6BE1A6BCCA92C31 -FilePath C:\server.domain.tld.cer

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