Visual Studio Build Tools 2022 17.14.45: VisualStudio.vsman size and SHA-256 mismatch

Question

Visual Studio Build Tools 2022 17.14.45: VisualStudio.vsman size and SHA-256 mismatch

Abi Rahmoo 0

Product: Visual Studio Build Tools 2022 Version: 17.14.45 (build 17.14.37906.3) Channel: Current Affected catalog: VisualStudio.vsman

I am attempting to independently verify the integrity of the official Microsoft distribution before installation.

The Visual Studio channel metadata declares the following catalog identity:

Declared size: 30,447,538 bytes Declared SHA-256: da49c304df0fff4e75c20849171840a06840e845ce814104d709dfb5cd461668

However, the catalog retrieved from the official Microsoft download URL produces:

Received size: 17,959,942 bytes Computed SHA-256: d1d8109899558618035724949673f69f8c1b5704f542a2e76f31d87e425d5710

The HTTP response returned status 200, and its Content-Length matched the received 17,959,942 bytes. The request specified Accept-Encoding: identity, and no HTTP Content-Encoding was observed.

Both the channel metadata and received catalog identify release 17.14.45, build 17.14.37906.3.

The discrepancy has been reproduced using the retained response and independent SHA-256 computation. I have not established whether the channel-declared digest represents the raw downloaded catalog or another representation.

My question:

What is Microsoft's officially supported procedure for independently authenticating this exact VisualStudio.vsman catalog when its downloaded size and SHA-256 differ from the values declared in the channel metadata?

Specifically, does Microsoft define a different byte representation or verification procedure for these fields? If the published metadata is inconsistent, is there a corrected official catalog or replacement distribution?

I am requesting clarification of this single catalog-integrity verification issue, not assistance with installation or unrelated Visual Studio functionality.

Related Developer Community report: https://developercommunity.visualstudio.com/t/Visual-Studio-Build-Tools-2022-171445:/11181507?webReport=true

A documented verification procedure or authoritative Microsoft engineering clarification would resolve this question.

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Answer 1

Hi @Abi Rahmoo ,

Thank you for providing the detailed investigation results and the specific size and SHA-256 values for Visual Studio Build Tools 2022 version 17.14.45.

I understand that you are looking for an officially supported way to verify the integrity of the VisualStudio.vsman catalog, particularly because the downloaded file does not match the size and SHA-256 values declared in the channel metadata.

Microsoft documentation describes how Visual Studio uses channel manifests and catalog files during installation and updates. However, it does not have a public documentation currently that explains an alternative byte representation or verification procedure for this specific catalog, or clarifies how to handle the reported discrepancy.

There is also a similar issue currently under investigation on the Visual Studio Developer Community, regarding a mismatch between the channel metadata and the downloaded VisualStudio.vsman file. I recommend following this existing discussion for further updates from the Visual Studio engineering team. You may also share your findings there, as they could help the team better understand whether the same issue is affecting your environment.

If you have an eligible Visual Studio subscription that includes Technical Support benefits, you can submit a support ticket for advanced assistance, such as a 1:1 consultation, remote support, or a Teams meeting with a support engineer. This is an effective way to resolve your concern.

I apologize that I cannot provide a definitive answer to your specific question through this Q&A thread. My support here is primarily based on publicly available Microsoft documentation and guidance covering areas such as Visual Studio installation, setup, and troubleshooting. Your concern requires further investigation and clarification from the Visual Studio engineering team, which is beyond what I can independently verify through the available documentation. I appreciate your understanding.

You’re also welcome to share your feedback on my response by following this guidance .

Have a nice day! I look forward to hearing from you.