Anyway, Microsoft strongly recommends using Windows Update instead of the Microsoft Download Center to download and install Windows Vista SP1 on single PCs. You can get the standalone install from the Download Center, and if you are rolling out SP1 to 50 computers, it kinda makes sense.
However, for most of us, using Windows Update sounds like a good idea to me. Here's why:
- The download size from Windows Update of Windows Vista SP1 for x86 is 65 MB (compared to 450 MB from the Microsoft Download Center).
- The download size from Windows Update of Windows Vista SP1 for x64 is 125 MB (compared to 745 MB from the Microsoft Download Center).
- Windows Update will recognize PCs with known problematic drivers and postpone downloading Windows Vista SP1 until the PC has updated drivers or other applicable updates.
If something quits working, try uninstalling and reinstalling the driver.
If you choose to install Windows Vista SP1 via the standalone installer, first visit Windows Update and install all optional drivers (see Knowledge Base 948187 and 948343).
And, as always, back things up (you should be doing so anyway).