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Install Service Packs in Windows Vista and 7

By . Last modified: 2014-08-30.

How to download and install Service Packs in Windows Vista and 7

Service Packs are collections of security updates and stability enhancements from Microsoft. In Windows Vista and 7 you must download and install these one by one - first Service Pack 1, then Service Pack 2, etc.

The latest Service Pack for Windows Vista is Service Pack 2.
The latest Service Pack for Windows 7 is Service Pack 1. 

How do I know which Service Pack I have on my computer?

Right-click Computer icon on Desktop or in Start menu and choose Properties. Or use keyboard shortcut Windows Key+PAUSE for opening System Properties.
Windows 7, My Computer right-click menu. Click Properties to see Service Pack info.

See what's written under Windows edition. First comes Windows Vista or 7 edition name (such as Ultimate, Home Basic, etc), then comes copyright information and then comes Service Pack information.
Windows 7, View basic information about your computer. Windows edition shows which Service Pack is installed.

If you already have Windows Vista Service Pack 2 or Windows 7 Service Pack 1 installed, you can safely skip this article.

If you have Service Pack 1 in Windows Vista or no line about Service Pack at all, continue reading this article.
Those with no Service Packs installed in Windows Vista should also take note if their Windows is a 32-bit or a 64-bit edition. See the line System type for this.
Windows 7, View basic information about your computer. System section reveals whether installed Windows is 32- or 64-bit version.

Close System Properties window by clicking OK.

Steps to take before installing a Service Pack in Windows Vista or 7

Before applying a Windows Vista or Windows 7 Service Pack, please follow steps in the following tutorials - otherwise the installation might fail because of some trivial reason such as messed up files on system drive or not enough free space on disk, or some malware blocking installation:

Installing Service Pack pre-requirements using Windows Update

Both Windows Vista and 7 have a long list of required software that must be installed before a Service Pack can be downloaded and applied. Therefore it is neccessary to install all available important updates first.

If you do not have Windows Update open yet, start by clicking Start button or pressing WINDOWS KEY, then type "update" in Search box and click Windows Update.
Windows Vista, to access Windows Update, type 'update' into Start menu Search box and click Windows Update.

Click Check for updates on the left to see if new updates are available. This applies even if Windows Update claims "No important updates available".
Windows 7, Windows Update. To see if new updates are available, click Check for updates.

If Windows Update will display some error page instead, try restarting your computer first. If this does not help, use this Fix It tool for repairing Windows Update problems.

If this is the first time you run Windows Update on Windows Vista or 7, you might see a lot of updates available. Click Install Updates button after the search is complete.
Large number of available updates also means that some updates cannot be installed because of conflicts - so a few failed updates is completely normal in such cases.

Please note that Windows Vista Service Pack 2 or Windows 7 Service Pack 1 will not appear on the list of updates until prerequisites have been installed! And remember, Windows Vista Service Pack 1 will not appear on this list anymore - if your Windows Vista has no Service Packs installed, you must download and install Service Pack 1 manually!
Windows Vista, Windows Update. Click Install now to install updates required before installing Service Packs.

Click Continue or Yes in User Account Control dialog.
Wait until the installation is complete and restart your computer if required. Repeat the process until you see just one important update available for Windows 7 or Windows Vista with Service Pack 1 installed, or no important updates available for Windows Vista with no Service Packs installed.

To see which important and optional updates are available, click either <number> important updates are available or <number> optional updates are available.
Windows Vista, Windows Update. To see which updates are available, click the <number> important updates are available link.

All important updates are selected by default and there is no need to deselect them. These updates must be installed in order to receive Windows Vista or Windows 7 Service Packs.
To see and select other updates, click Optional tab on the left. Then select the updates you want to install and click OK. Then click Install updates and click Continue in User Account Control dialog.
Windows Vista, Windows Update, select the updates you want to install. All important updates are selected by default. To see and select other updates to install, click Optional tab on the left.

Downloading Windows Vista Service Pack 1

To download Windows Vista Service Pack 1 manually, use one of the links below (click Run in Internet Explorer download prompt and then click Continue in User Account Control prompt after the download is complete):

Please remember that you will still have to install all updates available before applying Service Pack 1, as some of them are required for installing the Service Pack!
To see if you have 32-bit or 64-bit Windows Vista, use keyboard shortcut Windows Key+Break and see System type in System section.

Installing Service Packs in Windows Vista and 7

In the Windows Update window, click Install updates button and click Continue or Yes in User Account Control dialog. The Service Pack will then be downloaded. This might take up to an hour, depending on your connection speed.

In Windows 7, first part of the process will run in the same Windows Update window.
Windows 7, Windows Update, installing Windows 7 Service Pack 1. This step might take about ten minutes. 

In Windows Vista, Welcome to Windows Vista Service Pack window opens. Click Next.
Windows Vista, Install Windows Service Pack, Welcome to Windows Vista Service Pack 2. Click Next.

You can read the really fuzzy license terms if you want to (in short: you are responsible for everything Wink). Click I accept the license terms and then click Next.
Windows Vista, Install Windows Service Pack, Please read the license terms. Click I accept the license terms. Then click Next.

Finally click Install.
Windows Vista, Install Windows Service Pack 2. Click Install.

The installation of any Service Pack can easily take an hour or even more. You can safely do something else meanwhile.
After the installation is complete, click Restart now in the Windows Update window.
Windows 7, The updates were successfully installed. Click Restart now. Service Pack installation will continue after logging off.

You expected the process to be complete, right? Wink Not just yet - after you've been logged off, the installation will continue and it will go on after restarting your computer. Just wait for the process to complete, it still might take an hour now.
Windows Vista, Installing Service Pack. The process will continue after logging off and restarting your computer. The process might take several hours.

After Windows Vista or Windows 7 Service Pack installation is really complete, you will see Welcome Screen. Log on and re-run Windows Update to install all other updates released after the Service Pack.

If you just installed Windows Vista Service Pack 1, you must continue by installing some prerequisite updates to see Windows Vista Service Pack 2 available in Windows Update.

You might see a large increase in free disk space after installing Windows Vista Service Pack 2, this happens because old System Restore Points are deleted before installing Service Pack 2.

If everything works correctly after installing a Service Pack, you can free some disk space by removing Service Pack Backup Files using Disk Cleanup. Please wait for at least a week before deleting the backup files - this ensures everything runs smoothly.

If you have not yet configured automatic updates for all Microsoft products, read the Configure Windows Update article.

Please don't forget to install free security tools in case your PC has none:

And last, but not least: do set up automatic backups just in case something goes wrong in the future.

 

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