Go through Generating SSL Certificates from below link.
I don't think its possible to do with CWMS. you need to generate CSR and get it signed.
Simple answer, no you can not. What is your reason for not wanting to generate a CSR? This is the second question you ask with this as a criteria in two days. In my experience there are no issues or drawbacks by renewing certificates by a CSR. It’s a seamless and straightforward process that should be transparent to the users as long as they have the certificate(s) for the root CA in their trust store.
That is the action you want to take, but it doesn't explain the reason for why you'd want to do it this way?
Creating a CSR will not have any effect on the current certificate. So you can send that to your CA of choice and then when you get the signed certificate back from it you’ll upload it to the system. That’s the first time that you affect the certificate on the system.
You should read up on what in PKI terminology in known as chain of trust.
As @Roger Kallberg mentioned generating csr will not effect your existing certificates.
When generating CSR make sure you add all required SAN fields.
The screen shot is for Expressway, as such it’s not relevant to your question in this post. As Java pointed out this has been answered in your other post.
On expressway its possible to upload the certificate with private key. So to renew the certificate we upload the new cert and private key .And if the Root CA is expired we need upload the root too.
But the same option is not available with all systems, and with the CWMS you need to do generate CSR and share it with the go daddy to get new certificates.
