1. You installed a Windows 7 computer.
2. Windows Update is not enabled. The computer is connected to Internet.
3. You plug a Lenovo mouse to the computer.
4. Windows automatically queries device driver for the Lenovo mouse device from Windows Update.
5. However, the search finds no matching driver.
6. As a result, the Lenovo mouse is installed with an in-box HID mouse driver.
7. Then, you change Windows Update to enabled, “check for updates but let me choose whether to download and install them”, or any other settings, then click check for updates button.
8. You will see message prompt saying that there is an update for the Windows Update agent, you need to download and install it first before checking for updates from Windows Update server.
9. After installing the new version of Window Update agent, even without checking and downloading updates, plug the same Lenovo mouse again.
10. Again, Windows automatically queries device driver for the Lenovo mouse device from Windows Update.
11. This time, it gets a Lenovo driver for the mouse.
12. The Lenovo mouse is installed with the driver from Windows Update.
To make sure Windows can get all updates including driver updates from Windows Update server properly, Windows update agent (the windows update client) should keep updated to the newest version.
The latest version is available in the following Microsoft KB article:
How to get the latest version of the Windows Update Agent http://support.microsoft.com/kb/949104
ID d'article : 2831052 - Dernière mise à jour : 22 avr. 2013 - Révision : 1