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The leaf certificate


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#1 Uselesslight

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Posted 12 March 2015 - 05:13 PM

Hey guys,

 

Windows Server 2011 SBS Standard

 

I'm getting this warning on my server flagged as critical. It says "The leaf certificate is expiring" under title and under source it says "Networking - Certificate"  I can't find any information specifically about the "leaf certificate" online anywhere and I really have no idea to which it's referring so I can have it renewed.

 

We're going to be migrating the server to new hardware soon and from my understanding, this error has to be resolved before the migration can take place.  I've renewed a few of the expiring self-issued certificates for Exchange 2010 prior to this error coming up, but the dates are for 2 and 3 years into the future.

 

So, what is the leaf certificate and should I be worried about this? 



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#2 sflatechguy

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Posted 15 March 2015 - 08:21 AM

A leaf certificate is an SSL certificate that is valid for multiple domain names, and I believe it is used by applications like Lync and OWA. If you can locate the existing certificate in the certificates management console, have a look to see who issued it and renew it -- depending on who issued it, it may autorenew and then you won't have to do anything as the warning is just for informational purposes. Otherwise, you'll have to purchase a new one.






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