Why installing Vista SP1 might fail via Windows Update
 

When you try to install Windows Vista SP1 via Windows Update you can get error: Windows Vista Service Pack 1 is not available for installation from Windows Update and is not offered by Automatic Updates.

To help ensure a positive update experience, Windows Update will temporarily not offer Windows Vista SP1 to systems that have the following device drivers. In some cases, these device drivers are problematic on Windows Vista-based computers when you update to Windows Vista SP1. By installing updated device drivers, you will resolve the issue and enable Windows Update to offer Windows Vista SP1.

Click read more to view a list of drivers that don't work well with Vista SP1:


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