Hello Barbara,   Once you have your certificate you can upload with this- An example command to upload a certificate on the Server Administrator web server is as follows: omconfig preferences webserver attribute=uploadcert certfile=C:/xyz.crt webserverrestart=true   Other reference material: omconfig preferences webserver Command Line Guide page 95 : [URL] X.509 Certificate Management, SSL Server Certificates OM Server Administrator guide pages 34-35 :  [URL]  
I would like to replace the server certificates for OMSA on Windows Server with the help of an acme client. The replacement in the certificate store of windows is easy, but how can I replace the certificate in the Apache Tomcat of OMSA in an automated way?   Greetings Barbara
OMSA, certificate replacement with acme protocol