---
title: Start Switch to CA4
description: You will be now contacted in the next days concerning the switch to the new CA4 root certificate service for ZertES/Switzerland. Till end of the year you h
---

[Swisscom Trust Services > Service Status ](https://trustservices.swisscom.com/en/support/developer-section/service-status-overview)

# [Start Switch to CA4](https://trustservices.swisscom.com/en/support/developer-section/service-status-overview/start-switch-to-ca4)

 Written by [admin](https://trustservices.swisscom.com/en/support/developer-section/service-status-overview/author/admin) | Mar 22, 2021 4:00:00 PM

You will be now contacted in the next days concerning the switch to the new CA4 root certificate service for ZertES/Switzerland. Till end of the year you have time to switch your account to the new service.

[View full post](https://trustservices.swisscom.com/en/support/developer-section/service-status-overview/start-switch-to-ca4)

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