So I configure a “configure automatic updates” policy for testing purposes but the auto update and install won’t work. The main cause….? Lack of patience 😉
How this Policy works (source):
The Windows Update Agent periodically checks the WSUS server for updates. Updates it finds, it reports state for: Installed, Not Installed, Not Applicable. If a “Not Installed” update is approved and available, the WUA queues the installation files for download if the Configure Automatic Updates policy is set to AUOption ‘3’ or ‘4’.
The download occurs via Background Intelligent Transfer Service (BITS) subsequent to the WUA finding the update as available for download.
When the download of the update is completed, the WUA does one of two things:
- If the Configure Automatic Updates policy is set to AUOption ‘4’, then the WUA will schedule the update for installation at the scheduled time. This scheduled installation does NOT require access to the WSUS server to be conducted.
- If the Configure Automatic Updates policy is not set to AUOption ‘4’, then the update will be retained on the client computer until a user launches the Windows Update applet from Control Panel and initiates the installation.
So bottom line; the updates must first be downloaded on the client and ONLY then will Windows apply the “Automatically download updates and install them on the schedule specified” action
To force a client (source):
$updateSession = new-object -com "Microsoft.Update.Session"; $updates=$updateSession.CreateupdateSearcher().Search($criteria).Updates
Start-sleep -seconds 10
After this commands BITS will download the updates and prepare the installation. When you start Windows update you can see the available update
The default of the WSUS communication check-in (report and detect) is 22 hours. If you don’t want to wait so long you can change the “automatic updates detection frequency” to every hour (do not to this every hour on production policies!)
And now wait till the magic happens 🙂
Last but now least. When you change setting in the “configure automatic updates” policy you can trigger the client with powershell so you don’t have to reboot the client
net stop wuauserv
net start wuauserv
(new-object -Comobject Microsoft.Update.AutoUpdate).Detectnow()
You get get more information about Windows update log with the command.