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# Renew SSL certificate in Plesk with IONOS
- URL: https://new-blog.dougals.me/renew-ssl-certificate-in-plesk-with-ionos/
- Published: 2023-05-28T21:50:22.000Z
- Updated: 2023-05-28T21:50:22.000Z
- Author: Dougie Richardson
- Tags: WordPress, Howto, IONOS, Plesk, Server, Snippet, SSL, #Migrated-1789219936886, #wp, #wp-post, #Import 2026-09-12 13:32

Log in to IONOS - you need three files:

- private key (`.key`)
- certificate (`.cer`)
- intermediate certificate (`_INTERMEDIATE.cer`)

If you don't have the private key, Revoke Old Certificate, then Reissue Certificate - on Firefox this is a bit weird but it'll download the key file but until you open it won't complete the reissue.

In Plesk go to Websites & Domains > SSL/TLS Certificates > Advanced Settings > Add SSL/TLS Certificate.

Enter a certificate name:

![](https://blog.dougals.me/wp-content/uploads/2023/05/image-2.png)

Scroll to "Upload the certificate files":

![](https://blog.dougals.me/wp-content/uploads/2023/05/image-3.png)

Browse each file (it doesn't matter that they're `cer` rather than `crt`), use `_INTERMEDIATE.cer` for the CA certificate, then click Upload Certificate.