---
title: "❓ What to do in case of \"Insecure Connection\" / Expired SSL Certificate?"
url: "https://support.ftapi.com/en/article/-was-tun-bei-unsichere-verbindung-abgelaufenem-ssl-zertifikat"
language: "en"
last_updated: "2026-06-22T07:11:28.322Z"
---

# ❓ What to do in case of "Insecure Connection" / Expired SSL Certificate?

This article provides administrators with troubleshooting instructions when browsers report an "Insecure Connection" and explains the necessary steps for requesting and securely transmitting a new SSL certificate to support.

## Cause and initial steps

### Expired or faulty SSL certificate

The SSL certificate you are using has either expired or is missing important parts of the certificate chain (for example, intermediate certificates or root certificates).

**What do I need to do?**

**1\. Request a new certificate:** Request a new SSL certificate from your certificate authority.

**2\. Check the chain:** Ensure that the certificate is valid and contains the entire certificate chain.

**3\. Provide the private key:** The private key belonging to the certificate must be available.

The certificate must be in `.pfx` or `.p12` format, as only these formats include the private key.

## Submitting the certificate (Cloud vs. OnPremise)

> **Important note for OnPremise customers: The certificate replacement on an OnPremise installation is performed by you. Please do not create a support ticket for this.**

If you are an **FTAPI Cloud customer**, please create a ticket with FTAPI support to initiate the submission of the new certificate.

> **Important: Never send the certificate and the password to support unencrypted!**

Upon request, support will be happy to create a SubmitBox ticket for you, which you can use for the secure upload of the `.pfx` file or `.p12` file.

## **Related articles**

> #### [**📋 Windows: Create .p12 / .pfx certificate from a .p7b file**](https://support.ftapi.com/de/article/windows-p12-pfx-zertifikat-aus-einer-p7b-datei-erstellen)
> 
> #### [**📋 OpenSSL: Convert certificate formats (.cer, .crt, .pem) to .pfx**](https://support.ftapi.com/de/article/openssl-zertifikatsformate-cer-crt-pem-in-pfx-konvertieren)