Question

Can PowerShell read the Personal Store for certificate expiration dates?

Asked by: martit01

I'm looking for a PowerShell script that can access the Personal store on a Windows Server and alert on Certs about to expire.

Specifically: When the cert is going to expire in 15 days, write an event to the Application log.

Thanks,
Tom

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Asked On
2009-07-07 at 18:10:52ID24551654
Tags

PowerShell

,

certificate expiration

Topic

Powershell

Participating Experts
2
Points
500
Comments
3

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Answers

 

by: Chris-DentPosted on 2009-07-08 at 02:15:11ID: 24801879


Hey,

That shouldn't be too tricky actually...

Can you see if this gives you the right certificates?

Get-ChildItem cert:\LocalMachine\My

If it does, all we need to do is filter on the "NotAfter" field and post the results to the event log, neither of which is particularly hard either.

Chris

 

by: martit01Posted on 2009-07-08 at 16:30:10ID: 24809457

I ran the cmdlet and got the below output....

Thumbprint                                                                          Subject
----------                                                                               -------
A3E3AE944D46CA0EBA599F148B23D40A33E183BF           CN=la-scomrms02.XXX.com

I don't see any expiration date. Was it suppose to show the expiration date?

Thanks,
Tom

 

by: AbqBillPosted on 2009-07-11 at 08:51:09ID: 24830945

Hi Tom, the X509Certificate2 object has a GetExpirationDateString() method that returns a string representation of the certificate's expiration date. Bill.

$certs = get-childitem cert:\LocalMachine\CA
 
$certs | foreach-object {
  $output = new-object PSObject
  $output | add-member NoteProperty -name Subject -value $_.Subject
  $output | add-member NoteProperty -name ExpirationDate -value $_.GetExpirationDateString()
  $output
}

                                              
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