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Important Changes to App Service Managed Certificates: Is Your Certificate Affected?

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YutangLin
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Jul 21, 2025

Important updates are coming to App Service Managed Certificates (ASMC). Discover which certificate scenarios are affected, what actions may be needed, and how to identify impacted resources in your environment.

Overview  As part of an upcoming industry-wide change, DigiCert, the Certificate Authority (CA) for Azure App Service Managed Certificates (ASMC), is required to migrate to a new validation platfor...
Updated Aug 05, 2025
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YutangLin's avatar
YutangLin
Icon for Microsoft rankMicrosoft
Aug 05, 2025

Update (August 5, 2025)

We’ve published a Microsoft Learn documentation titled App Service Managed Certificate (ASMC) changes – July 28, 2025 that contains more in-depth mitigation guidance and a growing FAQ section to support the changes outlined in this blog post.

While the blog currently contains the most complete overview, the documentation will soon be updated to reflect all blog content. Going forward, any new information or clarifications will be added to the documentation page, so we recommend bookmarking it for the latest guidance.