Microsoft recently released update KB971033 for Windows 7’s built in activation and validation system, called Windows Activation Technologies. This update is available through Window's built in updates system and is available free of charge.
KB971033 ( 1.2 MB ) was designed to give Microsoft the ability to help you determine the legality of your Windows 7 installation. It does so by looking for software specially developed to circumvent the operating system’s genuine check. In its current state, according to the Genuine Windows blog, this update will be able to monitor the customer’s computer for over 70 known potentially dangerous hacks, cracks and exploits that might have been used. Those exploits might contain malware and might affect the user’s pc usage experience, the blog says.
Once installed, update KB971033 will alert the user if it finds any malicious software that it was designed to locate. If it does find such a program, the user will be able to fix the problem, usually with just a few mouse clicks. Computers that are not affected by any of those programs will not display any messages, and the update will continue to run silently in the background.
If your computer is affected by some exploit, update KB971033 will give you two options. You will be able to go to Microsoft’s website for more information, and you will also be presented with an option to purchase a valid license for the copy of Windows 7 installed on your computer.
Update KB971033 will communicate with Microsoft’s servers every 90 days to download an updated index of exploits that have been released and might have compromised your computer.
By default the update is not selected in Windows Update, u have to install it by simply navigate to the Windows Update section of the control panel, and put a checkmark besides the update.
Download : Description of the update for Windows Activation Technologies
The official name is: Update for Microsoft Windows (KB971033)
Note : If you are not sure from where u got your copy of Windows 7 or have pirated copy of it, stay away from this update coz it would deactivate your windows.