On February 16-02-2011, Microsoft made Windows 7 SP1 and Windows Server 2008 R2 SP1 available for TechNet and MSDN subscribers.
On 22-02-2011, they became publicly available for everybody. In this article, I will be showing you how to download and install Windows 7 SP1, either by using Windows Update or from Microsoft Download Center.
In order to download and install Windows 7 and Windows Server 2008 R2 SP1 you must currently have a Release to Manufacturing (RTM) version of Windows 7 or Windows Server 2008 R2 already installed. If you have previously installed a pre-release version of Windows 7 and Windows Server 2008 R2 SP1 on your machine, you must uninstall that version before installing SP1.
Downloading SP1 from Windows Update
Click the Start button , click All Programs, and then click Windows Update.
In the left pane, click Check for updates.
Click on important update link, and then select Service Pack for Microsoft Windows (KB976932), and then click OK.
Click Install updates. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
After the installation is complete, you will be prompted to reboot your machine. Click on Restart now
Log on to your computer, you will receive a notification indicating the update was successful. Click Close
Downloading and Installing Windows 7 SP1 from Microsoft Download Center
Before installing SP1 from Microsoft Download Center, you need to install Windows Update KB2454826 from Windows Update if it is not already installed. If you install the service pack from the Microsoft Download Center and do not install Windows Update KB245862, you could encounter a Stop error in Windows in rare cases. Windows Update KB2454826 will automatically be installed when you install the service pack by using Windows Update. However, Windows Update KB2454826 is not automatically installed when you install the service pack from the Microsoft Download Center. To check whether Windows Update KB2454826 is installed, Open Windows Update and click on View update history from the left pane. Notice whether Update for Microsoft Windows (KB2454826) is listed. If the update is not listed, you will have to install it from Windows Update. If its already listed, then carry on with the installation of SP1 from Microsoft Download Center.
Windows 7 Level
Required Service Pack Installation File
32-bit Windows 7
windows6.1-KB976932-X86.exe
64-bit Windows 7
windows6.1-KB976932-X64.exe
Summary Its is recommended to download and install Windows 7 Service Pack 1 (SP1), it is an important update that includes previously released updates for Windows 7. You can download and install Windows 7 SP1 either from Windows Update or Microsoft Download Center.
Maheshkumar S Tiwari edited Original. Comment: Added Tag