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.
It's not in Control Panel as claimed. The manual updater in Windows Defender never works, so you must always go to the Microsoft Windows Defender site to get the daily updates. I have to type Windows Defender in Search Programs and Files to root out the application in order to check if has the latest update version.