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Issue installing Business Central 28.0 (404 error) File or directory not found.

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Posted on by El Mehdi Taher

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Hi everyone,

I’m currently looking into installing Business Central version 28 (2026 release wave 1) and I tried to access the official Microsoft documentation here:

Business Central 28.0 What's New

However, I initially encountered a 404 – File or directory not found error.

I’d like to ask:

Has anyone else experienced this issue when accessing the documentation for version 28?

Is there an updated or alternative link for installation guidance (especially for on-prem)?

Are the installation packages or docs not yet fully available for version 28?

From what I understand, version 28 is part of the 2026 release wave 1 and may still be in preview or rolling out , so I’m wondering if that could be the reason.

Any clarification or guidance would be greatly appreciated!

Thanks in advance

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Dynamics 365 Business Central

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YUN ZHU 100,644 Super User 2026 Season 1 on at

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Same question: Issue installing Business Central 28.0 (404 error) File or directory not found.

Microsoft mentioned this in its documentation.

https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/whatsnew/whatsnew-update-28-0?wt.mc_id=DX-MVP-5004336#on-premises-download-packages

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Teagen Boll 2,383 Super User 2026 Season 1 on at

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V28 looks to be delayed till a further date. As the directions North America conference is soon i'd expect it to be available around then or just after directions.

Best,

Teagen Boll

Work: Catapult ERP

Social: LinkedIn

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Aman Kakkar 3,465 Super User 2026 Season 1 on at

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Hi,

Same thread - Issue installing Business Central 28.0 (404 error) File or directory not found.

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OussamaSabbouh 15,595 Super User 2026 Season 1 on at

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Hello,

Yes, others have hit this, and the main reason is that v28 docs/pages were still being published or adjusted during rollout; the official What’s New page for Business Central 28 is now live, and Microsoft also already has on-prem upgrade/install guidance for v28, but there’s one important catch: on the official v28 update page Microsoft says on-prem download packages are temporarily suspended because of a known SMTP attachment issue, so if you saw a 404 earlier it was likely a timing/publishing problem rather than a bad link; in other words, the documentation is now appearing, but package availability and some rollout pieces are still catching up, especially for on-prem.

Regards,
Oussama Sabbouh

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Kamal Khakhkhar 3,355 on at

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Hii there ,

as per requirement due to some reasons Microsoft Postponing the V28.0 update .
https://yzhums.com/37293/

along with this some of error , bugs are found which is also provided by other community members . please wait till next notice .

If you found answer please mark it verified .

Thank you.
Kamal Khakhkhar

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