Update encrypt certificate

Hello my name is Luca Baucke,

I wanted to ask how you can update the encrypt certificate.

or does it happen automatically?

best regards
Luca Baucke

Due to the fact that your posting lacks essential information about your environment and the used software versions etc., etc., I can only say that the certificate handling is by default not part of Nextcloud and need to be done separately (My answer might vary if your posting contains enought information).