Download Updates

Updates are downloaded with:

wuinstall /download

This first runs an implicit search, then downloads all matching updates to the local machine cache — ready to be installed at any point using /install. If an update is already present in the cache, it is skipped automatically, making repeated calls safe to use in scheduled scripts.

A common pattern is to separate the download and install steps: use /download during off-peak hours when bandwidth is available, then trigger /install during a defined maintenance window. This keeps the actual installation fast and predictable, independent of network conditions.