TheWindowsClub covers authentic Windows 11, Windows 10 tips, tutorials, how tos, features, freeware. Created by Anand Khanse, MVP. Windows Defender, also known as Microsoft Defender Antivirus, is a built in antivirus engine that runs in the background on a Windows PC to detect and block viruses, malware, and other online threats. However, you may need to temporarily disable its Real time Protection if it is using excessive system resources, interfering with a legitimate app, or blocking...