---
title: "Expiration of Stellar 1.0/1.1 Root Certificate in ActiveUpdate (AU) Module"
slug: "expiration-of-stellar-1011-root-certificate-in-activeupdate-au-module"
description: "EndpointProtection/StellarSeries/ready_to_release/HelpCenter"
updated: 2024-03-26T07:43:32Z
published: 2024-03-26T07:43:32Z
canonical: "help.txone.com/expiration-of-stellar-1011-root-certificate-in-activeupdate-au-module"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.txone.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Expiration of Stellar 1.0/1.1 Root Certificate in ActiveUpdate (AU) Module

### Summary

The Signature Checking Root Certificate in ActiveUpdate (AU) Module will expire in September 2025. After the Root Certificate expires, the Signature Check feature will fail, leading to ActiveUpdate failure.

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### Applicable Version

StellarOne Version 1.0/1.1 StellarEnforce Version 1.0/1.1 StellarProtect Version 1.0/1.1

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### Details

#### **Solution**

Updating StellarOne, StellarProtect and StellarEnforce V1.0/V1.1 to V1.2 (or later versions) would renew the Signature Checking Root Certificate in AU Module, which would prevent the above issue. Please refer to the product documents for details.

| Platform | Current Version | Supported Target Upgrade Version | Firmware Upgrade* | Mount Upgrade |
| --- | --- | --- | --- | --- |
| VMWare Hyper-V | 2.2 | 3.0/3.0 Service Pack 1 | V | V |
| 2.1 | 2.2/3.0/3.0 Service Pack 1 | V | V |
| 2.0 | 2.1/2.2/3.0/3.0 Service Pack 1 | V | V |
| 1.2 Patch 1 | 2.0/2.1/2.2 | N/A | V |
| 1.2 | 2.0/2.1 | N/A | V |
| 1.2 | 1.2 Patch 1 | V | V |
| VMWare | 1.1 | 1.2/1.2 Patch 1 | V | V |
| 1.0 | 1.1 | N/A | V |

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 For further assistance, please contact us at support@txone.com or your support provider.