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NOTE: SCAN CATALOG

Client scans have always been a source of confusion. The client receives a policy from ConfigMgr that points it to the WSUS server for the site of which it is a member. The client then connects to the WSUS server and downloads a copy of the updates catalog, which is stored in C:\Windows\SoftwareDistribution\DataStore\DataStore.edb. The first download is large, as it includes the whole catalog; downloads after that are delta changes only. The client then runs its scan against this local catalog. The scan is good for 24 hours, and then the client must scan again for updates.

The client only uses the WSUS server to download the catalog. If a s...

From

Cover of System Center Configuration Manager Current Branch Unleashed, First Edition

Note

Scan Catalog