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Azure Storage Blog

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Announcing General Availability of Client-Side Data Integrity Protections in Azure Blob Storage

Microsoft

Jun 29, 2026

We are excited to announce the General Availability of client-side data integrity in Azure Blob Storage. Blob Storage has long supported integrity validation, starting with MD5 as part of the origina...

Updated Jun 26, 2026

Version 1.0

wmarkley

Microsoft

Joined April 21, 2026

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MatthewSteeples

Brass Contributor

Jul 01, 2026

Is it possible to clarify what "Auto" does (at least for .NET) now? The docs just say

Recommended. Allow the library to choose an algorithm. Different library versions may make different choices

As that's the "default" (0) value Enum then is it possible that we're using this already without realising it?

wmarkley

Microsoft

Jul 29, 2026

In .NET 12.28.0 'Auto' defaults to 'StorageCRC64'. However, the client must explicitly set 'BlobClientOptions.TransferValidation.Upload.ChecksumAlgorithm' (and/or '.Download.ChecksumAlgorithm') to 'Auto'. If not specified, both 'Upload.ChecksumAlgorithm' and 'Download.ChecksumAlgorithm' default to 'None'. The defaults are subject to change in future SDK versions.