You can try the downloads at this link: http://support.microsoft.com/kb/935791#Method3
It will provide the downloads for both Service Packs.
Note : You must have SP1 installed and then you can follow with SP2.from what I read ..
Step 1: Try the updates after temporarily disabling any running Anti Virus and other security programs.
You may refer to: Disable Anti-Virus Software
Important 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: Try the steps from the following link and check the result:
How do I reset Windows Update components?
Important: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article:
How to backup registry
Edited by noknojon, 14 March 2015 - 03:34 AM.