August 2026 Cumulative Updates for Dynamics 365 Business Central
August 2026 cumulative updates are available for Dynamics 365 Business Central across multiple release waves. Online customers automatically upgrade to version 28.4, while on-premises customers can download updates for versions 28.4, 27.10, and 26.16. Implementation readiness and compatibility checks with partners are recommended before applying updates.
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"Online customers will automatically be upgraded to version 28.4 over the coming days/weeks and should receive an email notification when upgraded."
Key points
- Three on-premises cumulative updates released for August 2026: version 28.4 (2026 Wave 1), 27.10 (2025 Wave 2), and 26.16 (2025 Wave 1)
- Online customers automatically upgraded to version 28.4 with email notification
- Partners should verify implementation readiness and compatibility with customizations before upgrading
- Older updates available in cumulative updates archive
Quotes
- “Online customers will automatically be upgraded to version 28.4 over the coming days/weeks and should receive an email notification when upgraded.” (Clarifies automatic upgrade expectations for online customers so they understand the timeline and notification process)
- “Before applying the updates, you should confirm that your implementation is ready for the upgrade and ensure compatibility with your modifications.” (Emphasizes the critical need for readiness assessment and compatibility checks with customizations before applying updates)
Context
- Features: cumulative updates, automatic online upgrades, version compatibility
- Versions: 28.4, 27.10, 26.16, 2026 Release Wave 1, 2025 Release Wave 2, 2025 Release Wave 1
Source: DvlprLife, community blog. Summary, key points and quotes are derived (CONTENT-NOTICE.md); read the original for the full text.