SCCM - Windows 11 upgrade in place Task Sequence - pre download sources before running task Sequence

Question

Hi,

I plan to migrate about 500 machines from Windows 10 to Windows 11 24H2.

I will use an in-place upgrade task sequence containing an Operating System Upgrade package.

The task sequence will be pushed to the Software Center as "Available," allowing users to decide when to start the deployment.

I have created a collection in which I populate the machines to be migrated.

After adding a machine to the collection, I would like all the sources for the task sequence to be downloaded in the background before launching the task sequence. Specifically, I mean the files that appear after a user clicks on "Install."

The first package contains a few scripts, and the second one contains the OS upgrade package. This setup with cache downloaded would allow the installation to proceed faster.

I looked at the deployment options and saw the following options:

and

Unfortunately, none of these options work. When the task sequence appears in the Software Center, no downloading occurs, even after a long time...

When checking the deployment status through "Show Status Message," I encounter the following type of error:

(Message in french translated with google )
The program for deployment "TT020198" ("TT000420" - "") requires content to be downloaded, but there is insufficient cache memory. The current cache size is 10240 MB, of which 7114 MB is available. The current available disk space on the cache volume is 172051 MB. This program requires 7919 MB of available space in the cache. Workaround: Increase the cache size, or remove other content from the cache, or increase the amount of available disk space. This program will not be retried.*

I don't understand why the message above mentions a cache issue, given that the Task Sequence normally downloads all the packages it uses to C:\_SMSTaskSequence and not to C:\Windows\CCMCache.

This behavior is unclear to me.

What can I do to fix this issue and ensure that the sources are downloaded before the user starts the task sequence?

Thanks a lot for your help,

Izanagi

Answer 1

Hi,

Hope everything is going well.

Kindly check if there is any error in the CAS.log. The Content access service(CAS) is used to request pre-cache package contents for the available in-place upgrade deployment. The content access service(CAS) verifies whether the SCCM cache has enough space to accommodate the package download. The SCCM client cache size should accommodate the content. For your scenario, we can increase the cache size to 15GB to have a try.

For more information about PreCache content, please refer to the awesome blogs:

Configure SCCM Task sequence Pre-Cache Content – Part 1

Windows as a Service: Sharing my PreCache and In-Place Upgrade Task Sequences, part 1

Windows as a Service: Sharing my PreCache and In-Place Upgrade Task Sequences, part 2

Please note: The links are not from Microsoft, just for your reference.

Hope it helps. Have a nice day!

Best regards,

Simon

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Answer 2

Hi,

Thanks a lot for your reply,

You mean by changing below option ?