General availability: Azure Sphere OS version 21.08 expected on Aug 25
Published Aug 11 2021 05:40 PM 1,818 Views
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Azure Sphere OS version 21.08 is now available for evaluation in the Retail Eval feed. The retail evaluation period provides 14 days for backwards compatibility testing. During this time, please verify that your applications and devices operate properly with this release before it is deployed broadly to devices in the Retail feed. The Retail feed will continue to deliver OS version 21.07 until we publish 21.08 in two weeks. 


This evaluation release of 21.08 includes enhancements and bug fixes for the OS only; it does not include an updated SDK.


Areas of special focus for compatibility testing with the 21.08 release should include:

  • Apps and functionality utilizing cURL
  • Apps and functionality utilizing SPI
  • Apps and functionality utilizing I2C


In addition, 21.08 includes updates to mitigate against the following Common Vulnerabilities and Exposures (CVEs):

  • CVE-2021-22924


For more information on Azure Sphere OS feeds and setting up an evaluation device group, see Azure Sphere OS feeds and Set up devices for OS evaluation.


For self-help technical inquiries, please visit Microsoft Q&A or Stack Overflow. If you require technical support and have a support plan, please submit a support ticket in Microsoft Azure Support or work with your Microsoft Technical Account Manager. If you would like to purchase a support plan, please explore the Azure support plans.

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Last update:
‎Aug 11 2021 05:31 PM
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