Download of Windows 11 updates (UUP) via SCCM DP very slow

St 20 Reputation points

Hello dear community,

I have a question about the relatively new Unified Update Platform (UUP) model that is already being used to deploy Windows 11 23H2 updates.

We are using Microsoft Endpoint Configuration Manager version 2309 to deploy software, updates and operating systems.

When deploying Windows 11 23H2 updates, I noticed that the updates are no longer stored in the c:\Windows\ccmcache folder as before, but first end up in the c:\Windows\ccm\temp folder and are then moved. (I have not yet found out where 😊)

As written, the Windows updates are distributed via SCCM. The problem I have is that Windows 11 updates (on a client) that are distributed via UUP take a very long time (slow) to download. When downloading a Windows 10 update, not UUP, the file downloads and installs very quickly.

Does anyone have any idea why the download via UUP takes so long and what protocols are used to download the updates from the distribution point?

I would appreciate any feedback.

Microsoft System Center
Microsoft System Center
A suite of Microsoft systems management products that offer solutions for managing datacenter resources, private clouds, and client devices.
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Microsoft Configuration Manager Updates
Microsoft Configuration Manager Updates
Microsoft Configuration Manager: An integrated solution for for managing large groups of personal computers and servers.Updates: Broadly released fixes addressing specific issue(s) or related bug(s). Updates may also include new or modified features (i.e. changing default behavior).
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  1. AllenLiu-MSFT 41,691 Reputation points Microsoft Vendor

    Hi, @St

    Thank you for posting in Microsoft Q&A forum.

    The slow download of Windows 11 updates via SCCM DP may be due to the larger size of the updates and the use of the Unified Update Platform (UUP). UUP updates are downloaded as sparse files, which can take longer to download and install.

    It is recommended to optimize Windows 10 or later quality update delivery using Configuration Manager with express installation files and a peer caching technology, as needed. This approach should alleviate the challenges associated with Windows devices downloading large content for installing quality updates.

    For more information:

    If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Add comment".

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