I am experiencing problems installing a PKCS12 certificate on CSS 11506. I have exported the cert from IIS 5.0 server including private key. I used OpenSSL to extract private key and cert. Cert associates fine, but CSS says RSA Key is not an RSA Key. I have tried removing spaces, adding carriage return at end, etc. I know that you can import a PCKS12 certificate , but what can be done with it (if it has the private key and CA authority chain in it)? With CSM, it can be imported directly.