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Tim Brigham
Asked: 2012-09-21 12:43:37 +0800 CST

Microsoft CA certificate templates expires sooner than expected

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The certificates my Microsoft CA is generating do not match the time period indicated in the template used. How can I resolve this?

I recently created a new certificate template for use on my Linux boxes on my Microsoft CA (2008 R2 Enterprise). This template is approved for server and client authentication purposes with a validity period of 10 years - the expected lifetime of our Linux boxes - and the subject name supplied in the request. I have checked both the intermediate and offline CA - both have more than 10 years of life listed. The certificates are exactly two years.

Is there some kind of hard limit I'm hitting here?

certificate

1 Answers

  1. Best Answer

    By default ADCS is set to issue certs for a maximum of 2 years (regardless of template or request).
    To change that just run the following two commands (modify as desired):

    certutil -setreg CA\ValidityPeriod "Years"
certutil -setreg CA\ValidityPeriodUnits 10

    Then restart certificate services:

    net stop  certsvc
net start certsvc
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