Windows Vista SP1 RC released to public

Windows Vista Service Pack 1 RC is now available through Windows Update. Experience the WU based Vista SP1 installation by following 4 simple steps. Windows Vista SP1 RC distributed through Windows Update will be applicable to Windows Vista machines that are running on any of the 36 languages supported by Vista RTM. If you already installed the Service Pack to your machine by using the standalone package, you must uninstall before you scan Windows Update for Windows Vista SP1.

Systems running on Windows Vista RTM require as many as three updates before SP1 can be installed. These updates are permanent to your Windows Vista systems. Windows Update will detect your system configuration and offer the prerequisite packages that are applicable to your system.

Update: A standalone package for both 32-bit and 64-bit systems has been released.

Download: Via Windows Update | Standalone Package

On Vista RTM:

1. Download the command (.cmd.remove) script to your machine, rename it by removing deleting ".remove" at the end of the file name. Run the newly named script on an elevated prompt.
· To run the script on elevated prompt, after you download the script, right click on the file and select "Run as administrator" option.
· The script sets a registry key on your system. The registry key is required for WU server to recognize your machine as a valid target for Vista SP1.
· After running the script, Windows Update automatic updates would normally automatically update your machine each night for the next several days with the prerequisites and then offer the Service Pack. However if you would like to install SP1 quicker you can manually do the next few steps to speed up the process.

2. Install all pending "Important" updates and reboot. You may have to do this several times to get fully up to date.
· Check for updates on Windows Update. Go to Control Panel à System and Maintenance à Windows Update and check for updates by clicking on "Check for Updates" in the top left of the task pane.
· You will be offered all previously released Windows Vista updates that you may not have installed on your system. Install all applicable updates. If you have a clean install of RTM, there might be quite a few updates to install. You may need to do this a couple of times to get fully up to date. At some point Update for Windows (KB935509) will be in this list. This is the first pre-requisite install. Reboot your machine when prompted.
· If you see Ultimate Extras, you can hide them by right-clicking and hiding. Simply unchecking them will not let the remaining updates show up. Please install all of the remaining "important" updates.
· If you reboot and rescan right away, at times you may not see all updates right away. Wait 10 minutes and scan again.

3. Install Update for Windows (KB937287) and Update for Windows (KB938371) as they are offered sequentially
· The first package that will be offered is Update for Windows (KB937287) and it does not require a reboot.
· Check for updates on Windows Update again, install and reboot when prompted for Update for Windows (KB938371). You may need to wait 10 minutes and re-scan again if it does not show up right after reboot.

4. Install Windows Vista Service Pack 1 (KB936330).
· Check for updates on Windows Update again, install and reboot when prompted for Windows Vista Service Pack 1. You may need to wait 10 minutes and re-scan again if the package does not show up right after the previous reboot.
· This process will typically take from 30 minutes to 1 hour but may take longer on some systems.

To reduce the number of reboots required to install Windows Vista Service Pack 1, the prerequisite packages will be released to Windows Vista customers through WU prior to the release of Windows Vista Service Pack 1. These prerequisite packages will be coupled with other updates that are applicable to Windows Vista RTM systems and require a reboot. Consequently, the systems that are getting updates through automatic updates will already have prerequisites installed at the time of the SP1 release and be directly offered SP1 through WU.

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