Increasing ConfigMgr Client Cache size during OSD

By Johan Arwidmark / August 29, 2023

Here is a quick tip if you are deploying many applications in your task sequence: Make sure that the ConfigMgr client cache size is configured with enough space for your applications. If not, you'll see something like the following:

*The ConfigMgr Client cache running low on space during OSD.*

Increasing the ConfigMgr Client Cache

Back in the early days of ConfigMgr OSD you needed to run a script in your task sequence to increase the ConfigMgr Client cache size due to a bug in the Setup Windows and Configuration Manager action. But that bug has been fixed many years ago.

To increase the cache size to 25 GB (default is 5 GB), add the SMSCACHESIZE=25600 value to the installation properties.

*Configuring the ConfigMgr Client Cache size for OSD.*

After doing this change, you can verify that cache size is correct by starting the ConfigMgr client, and check the Cache tab, or by running this PowerShell script:

$resman = New-Object -ComObject "UIResource.UIResourceMgr"
$cacheInfo = $resman.GetCacheInfo()
$cacheInfo