Applies to ONTAP 9 ONTAP upgrade HTTPS connections (System Manager, REST API, etc) CA-signed certificate Issue After an ONTAP upgrade, previously-functioning SSL connections fail with an error similar...Applies to ONTAP 9 ONTAP upgrade HTTPS connections (System Manager, REST API, etc) CA-signed certificate Issue After an ONTAP upgrade, previously-functioning SSL connections fail with an error similar to the following: Peer closed SSL connection prematurely