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I'm trying to renew our exchange 2010 certificate. I have followed this guide. When I try to open the .req file it is in binary.

Is there a way to convert it to text so I can continue with the guide?

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Do you plan on using an internal CA, or do you need to enroll your request with a public CA (like VeriSign, Comodo, GoDaddy, etc.?) –  Mathias R. Jessen Sep 23 '12 at 13:08
    
Hi, I plan to use an Internal CA on another server rather than self certificate or use VeriSign etc. Thank you for the solution below, I will try this later. –  Matt Sep 24 '12 at 9:05

1 Answer 1

up vote 2 down vote accepted

I've seen this in the GUI (the Exchange Management Console) before.

To resolve this, I used the Exchange Management Shell instead:

First, find the thumbprint of the certificate you are about to renew, by issuing:

Get-ExchangeCertificate

Copy the Thumbprint and generate a CSR by piping it to the New-ExchangeCertificate cmdlet:

Get-ExchangeCertificate -Thumbprint "The Thumbprint goes here" | New-ExchangeCertificate -GenerateRequest -KeySize 2048 -PrivateKeyExportable:$true
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Hi. This was helpful, but when I created a new certificate and renewed the certificate, the Expiration date was the same. Do you have any suggestions. Thank you. –  Matt Sep 25 '12 at 7:51
    
Have you tried to open the Certificates MMC, and simply right-click the certificate and choose "Renew with new key". It should let you choose a domain CA to enroll your request with, right away –  Mathias R. Jessen Sep 25 '12 at 20:07
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I have done this, The main CA needed updating also. Thank you for your help. –  Matt Sep 26 '12 at 9:22

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