How to use WuInstall?
WuInstall is a command line tool, so you have to run "cmd" to get to the command line. If you double click on WuInstall, you only get a window showing a short description of the parameters. We recommend to run WuInstall as administrator to avoid troubles with access rights.
Basically, you can do three things with WuInstall:
- Searching for updates:
WuInstall /search
→ searches for all available updates, either (if configured) on the internal WSUS or in the internet on the Microsoft Update Server and gives a list of the updates found
- Downloading updates:
WuInstall /download
→ does a search like /search and in addition downloads the updates found
- Installing updates:
WuInstall /install
→ does a search first, then it downloads and finally installs the updates found
There are several options for selecting not all, but only specific updates: /severity, /match, /nomatch, /matchfile, /nomatchfile, /classification, /product, /criteria
Beyond that, there are some other very useful options:
/bypass_wsus: switches the WSUS off while executing WuInstall, to force going for the Microsoft Update Server in the internet
/autoaccepteula: automatically accepts EULAs for all updates which have to be installed → no user interaction required
/reboot [nseconds]: after executing WuInstall, the system is rebooted after n seconds
For more information, see also the WuInstall HowTo
Last updated on January 3, 2024