NOTIFICATION: Update the Speech SDK on Linux and Android by 1 July 2026

## Introduction

We are making an important update to the Azure AI Speech SDK to help maintain secure and reliable connections. If you are using the Speech SDK on Linux or Android, an update is recommended before **1 July 2026** to avoid potential service disruptions.

## How this change may affect your organization

The certificate revocation list (CRL) caching behavior in Azure AI Speech SDK versions earlier than **1.48.2** may cause connection failures to the Azure AI Speech Service on Linux and Android platforms. This behavior is related to industry-wide changes in CRL structures implemented by Certificate Authorities.

### Who is affected:

* Applications using Azure AI Speech SDK on Linux or Android
* SDK versions earlier than 1.48.2
* Deployments with CRL checking enabled (default setting)

### Not affected:

* Windows, iOS, macOS deployments
* Embedded-only (no cloud) deployments
* SDK version 1.48.2 or later

If no action is taken, impacted deployments may experience connection failures after **1 July 2026**, as TLS certificates are renewed. These failures may occur without warning and can vary based on certificate-renewal timing in each region.

## Recommended action

To help prevent service disruption, consider one of the following actions before **1 July 2026**:

1. **Action recommended:** Upgrade to Azure AI Speech SDK version **1.48.2 or later**.
2. Review the official [Download and setup instructions](https://learn.microsoft.com/azure/ai-services/speech-service/quickstarts/setup-platform) in Microsoft Learn.
3. **As an alternative**: you may disable CRL checking by setting `OPENSSL_DISABLE_CRL_CHECK` to `"true"` on your `SpeechConfig` object.

For detailed guidance, see the [Azure AI Speech SDK](https://learn.microsoft.com/azure/ai-services/speech-service/migrate-to-sdk-1-48-2) documentation on Microsoft Learn.

## Help and support

If you have a support plan and need technical help, open the ⁠[Azure portal](https://portal.azure.com/) and select the question mark icon at the top of the page to create a support request.