check before: 2025-08-15
Product:
Windows, Windows Server
Platform:
Online, Windows Desktop, World tenant
Status:
Change type:
Admin impact
Links:
Details:
IMPORTANT: This notice is only relevant for environments where:
Windows Server Update Services (WSUS) is used to deploy Windows security updates to Windows 11, version 24H2 devices.
Scan Cab is used to check for update compliance
The August 2025 Scan Cab was deployed before 9:15 AM PT on August 15, 2025.
An updated version of the August 2025 Scan Cab was made available at 9:15 AM PT on August 15, 2025. This Scan Cab includes new metadata corresponding to the republished August 2025 security update for Windows 11, version 24H2 (KB5063878). The new Scan Cab only needs to be re-deployed in the environments where Windows Server Update Services (WSUS) is used for installing updates.
The republished update for Windows 11, version 24H2 addresses an issue where the August 2025 Windows security update (KB5063878) failed to install with error code 0x80240069 when installed via WSUS. The issue was not related to any content in KB5063878, but to how the update was published itself.
See the Additional Information section of this message for details.
Change Category:
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Scope:
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Release Phase:
Created:
2025-08-16
updated:
2025-08-16
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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MS Urgency
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MS workload name
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summary for non-techies**
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Direct effects for Operations**
Failure to Install Security Updates
If the updated Scan Cab is not deployed, Windows 11, version 24H2 devices may fail to install the August 2025 security update (KB5063878) via WSUS, leading to potential security vulnerabilities.
- roles: IT Administrators, Security Officers
- references: https://learn.microsoft.com/windows/release-health/status-windows-11-24h2#3635msgdesc, https://support.microsoft.com/help/5063878
Increased Support Tickets and User Frustration
Users may experience issues with their devices not receiving critical updates, resulting in increased support tickets and frustration among users due to unresolved security vulnerabilities.
- roles: Help Desk Support, End Users
- references: https://techcommunity.microsoft.com/t5/windows-it-pro-blog/announcing-a-smaller-wsus-scan-cab/ba-p/2928256?msclkid=256145ccd0c011ec9266b53af8d0aca1, https://learn.microsoft.com/windows-server/administration/windows-server-update-services/manage/wsus-and-the-catalog-site
Configutation Options**
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IT Security**
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explanation for non-techies**
Imagine you have a library where books are constantly updated with new information. In this library, there's a special tool, like a checklist, that helps librarians ensure all books are up-to-date. This tool is called the "Scan Cab" in the IT world. It checks if all the digital "books" (software updates) are correctly installed on computers.
Recently, a new version of this checklist was released because the previous one had a small issue. Think of it like realizing that the old checklist missed a few book titles, causing some books not to be updated properly. This issue specifically affected computers using a system called WSUS (Windows Server Update Services) to manage updates. WSUS is like a central library system that distributes books to all branches, ensuring every computer gets the latest updates.
For those using WSUS, it's important to download the new checklist (Scan Cab) to ensure everything is in order. If your library (or company) doesn't use this specific system, you don't need to worry about the new checklist. However, it's a good idea to check if any other tools you use might rely on this checklist.
In summary, if your environment uses WSUS to manage updates, make sure to update your checklist to avoid any missed updates. If not, you can continue as usual, but it's wise to review any tools that might be affected.
** AI generated content. This information must be reviewed before use.
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Last updated 2 months ago ago
