You may temporarily disable all antivirus software’s installed on your computer. Refer the following link. http://windows.microsoft.com/en-US/windows7/Disable-antivirus-software NOTE: Antivirus software can help protect your computer against viruses and other security threats. In most cases, you shouldn't disable your antivirus software. If you have to temporarily disable it to install other software, you should re-enable it as soon as you're done. If you're connected to the Internet or a network while your antivirus software is disabled, your computer is vulnerable to attacks Step 2: After disabling antivirus, you may try to install Windows update manually in Clean Boot state. Refer the following article. How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7 http://support.microsoft.com/kb/929135 NOTE: Make sure that you perform “step 7” in the above link to boot your computer normally after you troubleshoot. Step 3: Refer the following link to manually install service pack 1 on your computer. http://www.microsoft.com/en-us/download/details.aspx?id=5842
Mar 15, 2011 This article, KB 2505743, provides some suggestions to improve your experience when you install Windows 7 SP1 from the Microsoft Download Center Web site. 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. Aug 26, 2016 Publisher's Description. Microsoft Windows Server 2008 R2 SP1 provides ongoing improvements to the Windows Operating System (OS), by including previous updates delivered over Windows Update as well as continuing incremental updates to the Windows 7 and Windows Server 2008 R2 platforms based on customer and partner feedback.