Hilton Hotels & Resorts (formerly known as Hilton Hotels) is an international chain of full service hotels and resorts and the flagship brand of Hilton Worldwide. The original company was founded by Conrad Hilton. As of 2010, there were over 530 Hilton branded hotels across the world in 78 countries across six continents. Hilton hotels are either owned by, managed by, or franchised to independent operators by Hilton Worldwide.
3. Scan for Malware. Another significant source behind not working of Windows Defender is the presence of any malware on your computer. A proper and thorough scan are required to find out them. The most used tools are the MalwareBytes Anti-Malware and Microsoft Safety Scanner.
Windows Defender is enabled by default to start protecting the computer in real-time against spyware, adware and other types of malware. However, the program does not scan or protect against viruses. You will need to install an anti-virus program to get full protection against all threats. The Windows Defender download is free for all XP, Windows 2003, Vista and Windows 7 users. Do not buy Windows Defender, because Microsoft never sells it. Any supposed vendor is scamming you.