I had the same issue renewing a wild card certificate in Aruba ClearPass 6.6
Step 1. Installed Cygwin and OpenSSL on Windows 10
Step 2. Extracted the Private key and PublicKey chain
openssl pkcs12 -in yourP12File.pfx -nocerts -out privateKey.crt
openssl pkcs12 -in yourP12File.pfx -nokeys -out PublicKey.pem
Step 3. In the Aruba ClearPass Policy Manager. In the Menu Administration > Certificates > Trust List the DigiCert Global Root was disabled, the Root Cert has been enabled.
Step 4. The RapidSSL TLS DV RSA Mixed SHA256 2020 CA intermedaite was missing and had to be manually added.
Step 5. Certificate Chain Order
The certificate chain PEM file had to be manually altered as the order was Public Key, Root CA and then Sub CA.
I had to open up the PublicKey.pem file and copy and past the last cert and paste in as the second entry in the file. I used Notepad++ to edit the PEM file.
Step 6. Uploaded new wildcard certificate worked as expected.
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Jeremy Gowland
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