After my server crashed and I reinstalled Windows and ran Exchange installation in recover mode, I have been having issues trying to enable the certificate.
Import-ExchangeCertificate : Cannot import as there already is a certificate wi
th a thumbprint of .....
Enable-ExchangeCertificate : The certificate with thumbprint ..... was found but is not valid for use with Exchange Server
(reason: PrivateKeyMissing).
I then ran certutil repairstore...
C:\Users\Administrator.mydomain>certutil -repairstore my 12121212121212
================ Certificate 1 ================
Serial Number: 12121212121212
Issuer: SERIALNUMBER=07969287, CN=Go Daddy Secure Certification Authority, OU=ht
tp://certificates.godaddy.com/repository, O=GoDaddy.com, Inc., L=Scottsdale, S=A
rizona, C=US
NotBefore: 2010/08/12 01:08 PM
NotAfter: 2011/08/14 01:38 PM
Subject: CN=mydomain.org, OU=Domain Control Validated, O=mydomain.org
Non-root Certificate
Cert Hash(sha1): c2 87 8a 7d 99 17 10 43 17 6e 7f ac bf 26 8b 8f 6c 34 1e 04
No key provider information
Cannot find the certificate and private key for decryption.
CertUtil: -repairstore command FAILED: 0x80090010 (-2146893808)
CertUtil: Access denied.
C:\Users\Administrator.mydomain>
Please help.