I realize this thread is a little older, but since the original poster hasn't responded I can tell you what he's likely seeing - since I'm having the same issue:
PS C:\Users\Administrator\Desktop> Get-CertificationAuthority
Get-CertificationAuthority : The term 'Get-CertificationAuthority' is not recognized as the name of a cmdlet, function, script file, or
operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
CommandType Name Version Source
Alias Get-CRL 3.2.6.0 PSPKI
Alias Get-CTL 3.2.6.0 PSPKI
Alias Show-CRL 3.2.6.0 PSPKI
Alias Show-CTL 3.2.6.0 PSPKI
Function Convert-PemToPfx 3.2.6.0 PSPKI
Function Convert-PfxToPem 3.2.6.0 PSPKI
Function Get-CertificateContextProperty 3.2.6.0 PSPKI
Function Get-CertificateRequest 3.2.6.0 PSPKI
Function Get-CertificateRevocationList 3.2.6.0 PSPKI
Function Get-CertificateTrustList 3.2.6.0 PSPKI
Function Get-CryptographicServiceProvider 3.2.6.0 PSPKI
Function Get-EnrollmentPolicyServerClient 3.2.6.0 PSPKI
Function Get-ErrorMessage 3.2.6.0 PSPKI
Function Get-ObjectIdentifier 3.2.6.0 PSPKI
Function Get-ObjectIdentifierEx 3.2.6.0 PSPKI
Function New-SelfSignedCertificateEx 3.2.6.0 PSPKI
Function Ping-ICertInterface 3.2.6.0 PSPKI
Function Receive-Certificate 3.2.6.0 PSPKI
Function Register-ObjectIdentifier 3.2.6.0 PSPKI
Function Show-Certificate 3.2.6.0 PSPKI
Function Show-CertificateRevocationList 3.2.6.0 PSPKI
Function Show-CertificateTrustList 3.2.6.0 PSPKI
Function Start-PsFCIV 3.2.6.0 PSPKI
Function Submit-CertificateRequest 3.2.6.0 PSPKI
Function Test-WebServerSSL 3.2.6.0 PSPKI
Function Unregister-ObjectIdentifier 3.2.6.0 PSPKI
PS C:\Users\Administrator\Desktop> Get-CertificationAuthority
Get-CertificationAuthority : The term 'Get-CertificationAuthority' is not recognized as the name of a cmdlet, function, script file, or
operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
- Get-CertificationAuthority
-
~~~~~~~~~~~~~~~~~~~~~~~~~~
- CategoryInfo : ObjectNotFound: (Get-CertificationAuthority:String) [], CommandNotFoundException
-
FullyQualifiedErrorId : CommandNotFoundException
CommandType Name Version Source
Alias Get-CRL 3.2.6.0 PSPKI
Alias Get-CTL 3.2.6.0 PSPKI
Alias Show-CRL 3.2.6.0 PSPKI
Alias Show-CTL 3.2.6.0 PSPKI
Function Convert-PemToPfx 3.2.6.0 PSPKI
Function Convert-PfxToPem 3.2.6.0 PSPKI
Function Get-CertificateContextProperty 3.2.6.0 PSPKI
Function Get-CertificateRequest 3.2.6.0 PSPKI
Function Get-CertificateRevocationList 3.2.6.0 PSPKI
Function Get-CertificateTrustList 3.2.6.0 PSPKI
Function Get-CryptographicServiceProvider 3.2.6.0 PSPKI
Function Get-EnrollmentPolicyServerClient 3.2.6.0 PSPKI
Function Get-ErrorMessage 3.2.6.0 PSPKI
Function Get-ObjectIdentifier 3.2.6.0 PSPKI
Function Get-ObjectIdentifierEx 3.2.6.0 PSPKI
Function New-SelfSignedCertificateEx 3.2.6.0 PSPKI
Function Ping-ICertInterface 3.2.6.0 PSPKI
Function Receive-Certificate 3.2.6.0 PSPKI
Function Register-ObjectIdentifier 3.2.6.0 PSPKI
Function Show-Certificate 3.2.6.0 PSPKI
Function Show-CertificateRevocationList 3.2.6.0 PSPKI
Function Show-CertificateTrustList 3.2.6.0 PSPKI
Function Start-PsFCIV 3.2.6.0 PSPKI
Function Submit-CertificateRequest 3.2.6.0 PSPKI
Function Test-WebServerSSL 3.2.6.0 PSPKI
Function Unregister-ObjectIdentifier 3.2.6.0 PSPKI