I am doing this in a lab from Azure SharePoint template, on my SharePoint server. I am unable to Create a claim mapping by using Windows PowerShell. I am following the article 

https://technet.microsoft.com/en-us/library/dn635311.aspx

When I enter the following, I don't get an error or confirmation.

PS C:\Users\me> $cert = New-Object System.Security.Cryptography.X50
9Certificates.X509Certificate2(C:\AcsTokenSigning.cer")
>>

What does this mean, how do I fix?

Hi,

You forgot a ".

$cert = New-Object System.Security.Cryptography.X50
9Certificates.X509Certificate2("C:\AcsTokenSigning.cer")