check before: 2025-04-09
Product:
Windows, Windows Server
Platform:
Online, Windows Desktop, World tenant
Status:
Change type:
Admin impact
Links:
Details:
Updates are now available to reflect the 2025 Daylight Saving Time (DST) change in the Aysén region in Chile. On March 20, 2025, the Chilean government made an official announcement that the Aysén Region in Chile would permanently stay in DST or UTC-3. Microsoft has included support for this change in the April 2025 Windows security update for all supported versions of Windows 11, Windows 10, and Windows Server. These changes are documented in the release notes articles associated with these updates.
When will this happen:
Support for this change is available now as part of the April 2025 Windows security update.
Change Category:
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Scope:
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Release Phase:
Created:
2025-04-10
updated:
2025-04-10
Task Type
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MS How does it affect me
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MS Preperations
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MS Urgency
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MS workload name
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summary for non-techies**
Microsoft has released an update for Windows systems to support the Aysén region in Chile's decision to permanently stay in Daylight Saving Time (UTC-3), ensuring computers display the correct time by installing the April 2025 security update.
Direct effects for Operations**
Incorrect Time Display
If the April 2025 Windows security update is not installed, users in the Aysén region will experience incorrect time displays on their devices, leading to scheduling issues and confusion.
- roles: End Users, IT Support Staff
- references: https://docs.microsoft.com/troubleshoot/windows-client/system-management-components/daylight-saving-time-help-support, https://techcommunity.microsoft.com/blog/dstblog/interim-guidance-for-chile-dst-changes-2025/4399732
Operational Disruptions
Failure to update systems may result in operational disruptions, as meetings and deadlines could be missed due to incorrect time settings, affecting productivity.
- roles: Project Managers, Team Leaders
- references: https://techcommunity.microsoft.com/t5/windows-it-pro-blog/how-windows-manages-time-zone-changes/ba-p/3852632, https://techcommunity.microsoft.com/t5/daylight-saving-time-time-zone/bg-p/DSTBlog
Configutation Options**
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explanation for non-techies**
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Last updated 1 week ago
