Lync certificates expiring

Hello, I got a bunch of error alerts in Operation Manager about some Lync certificates that are about to expire.

The following certificates configured for Microsoft Lync Server 2013, File Transfer Agent are about to expire: Type: Default, Expiry Date: 5/6/2015 4:49:52 PM, Serial Number: , Issuer: CN=DC, DC=domain, DC=com. Note: The Service may no longer be able to start up after a certificate expires. Cause: Certificates configured for this service are about to expire. Resolution: You must renew these certificates to prevent loss of UC Services to users.

Where would I go to renew these certificates? The issuer is our domain controller.

Thank you!
Alan DalaITAsked:
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Cliff GaliherCommented:
The easier way is to run the Lync setup program. One of the options in there is to request and assign certificates to various roles.

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Alan DalaITAuthor Commented:
Sorry for my ignorance but Lync is already setup, I just want to renew those certificates.

Cliff GaliherCommented:
Yes, I know. You can still run the setup program. It opens to a list of tasks, one of which is managing certificates.
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Windows Server 2012

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