I'm attempting to replace the certificate for the IMPI on our H615C servers, however all combination I've tried are failing with either invalid cert or key.
I am not sure if the following will help in your situation but his comments about certificate formats is so true as it is the same issue we face on other products with self signed certs. https://www.youtube.com/watch?v=xDik8l82IG0&feature=youtu.be
Not sure what version of HCI you are running which also may change the procedure for doing this. Are you changing the certificate because it is expiring? If so, an update to the version of HCI software may be needed.