SmartPCFixer is a fully featured and easytouse system optimization suite. With it, you can clean windows registry, remove cache files, fix errors, defrag disk. Windows Live OneCare previously Windows OneCare Live, codenamed A1 was a computer security and performance enhancement service developed by Microsoft for Windows. Microsoft is pleased to announce the final release of the recommended security configuration baseline settings for Windows 10 Fall Creators Update. Added in Windows 10, version 1709. This policy setting determines how aggressive Windows Defender Antivirus will be in blocking and scanning suspicious files. What is the best antivirus software Windows 10 comes equipped with Windows Defender Security Center that does a great job fighting against viruses and other types of. How to Enable Windows Defender. Windows Defender is a software program which is built into Windows Vista. It is meant to assist with blocking, scanning for and removing adware, spyware and other possible threats to a computer. Does Windows Defender Blocking S' title='Does Windows Defender Blocking S' />If Windows Defender becomes disabled for some reason, it can be enabled easily through the Windows Control Panel. Step. Click Start. Then click Control Panel. Sun Serial Port Configuration. Step. Double click on Windows Defender. The icon for defender looks like a gray brick castle wall. Step. Click on the Tools, menu. Then under a heading called Settings, click Options. Step. Scroll down the options menu until you see a heading called Administrator Options. Step. Check the box called, Use Windows Defender. Then click the Save, button to save the changes. You may also wish to check other boxes in the options menu to activate other features, such as automatic malware scanning.