check before: 2026-05-31
Product:
Microsoft 365 suite
Platform:
Mac, Online, World tenant
Status:
Change type:
Admin impact
Links:
Details:
Summary:
Microsoft AutoUpdate for Mac will switch to a new CDN endpoint by June 1, 2026, improving update reliability and security. Organizations must ensure network access to res.public.onecdn.static.microsoft and update MAU settings if needed. The legacy endpoint will be decommissioned by August 1, 2026.
Details:
[Introduction]
We're updating the content delivery network (CDN) endpoint used by Microsoft AutoUpdate (MAU) to download updates for Microsoft apps on macOS. This change is part of an infrastructure upgrade to improve the reliability, performance, and security of update delivery by standardizing downloads on Microsoft's latest CDN endpoint.
[When this will happen:]
September 2025: MAU version 4.80 is released. MAU defaults to downloading updates from the new CDN endpoint unless configured to use a custom update location.
Through May 31, 2026: Updates are published to both the legacy and new CDN endpoints.
June 1, 2026: Updates are published only to the new CDN endpoint.
August 1, 2026: The legacy CDN endpoint is fully decommissioned.
Change Category:
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Scope:
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Release Phase:
Created:
2026-04-03
updated:
2026-04-03
Task Type
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Docu to Check
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MS How does it affect me
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MS Preperations
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summary for non-techies**
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Direct effects for Operations**
Update Failure
If access to the new CDN endpoint is blocked, MAU may fail to download updates, leading to devices remaining on older versions or missing critical security updates.
- roles: IT Administrators, End Users
- references: https://learn.microsoft.com/microsoft-365-apps/mac/mau-preferences
Security Vulnerabilities
Failure to update may expose devices to security vulnerabilities, as older versions may not receive important security patches.
- roles: IT Security Officers, End Users
- references: https://learn.microsoft.com/microsoft-365-apps/mac/mau-preferences
Network Configuration Issues
Organizations with restrictive outbound internet access may need to adjust firewall or proxy settings to allow access to the new CDN endpoint.
- roles: Network Administrators, IT Support Staff
- references: https://learn.microsoft.com/microsoft-365-apps/mac/mau-preferences
User Experience Degradation
Users may experience degraded performance or functionality if their applications are not updated regularly due to access issues.
- roles: End Users, Help Desk Staff
- references: https://learn.microsoft.com/microsoft-365-apps/mac/mau-preferences
Compliance Risks
Organizations may face compliance risks if they fail to keep software updated, potentially violating security policies or regulations.
- roles: Compliance Officers, IT Administrators
- references: https://learn.microsoft.com/microsoft-365-apps/mac/mau-preferences
Configutation Options**
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Opportunities**
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Potentional Risks**
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IT Security**
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explanation for non-techies**
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** AI generated content. This information must be reviewed before use.
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Last updated 2 weeks ago ago
