Windows Defender is an antivirus program and a fully integrated part of Windows 10. It offers real-time protection against various threats, such as adware, spyware, and viruses. Windows Defender is fast and efficient, does not waste system resources, and is one of the most widely used antivirus programs. To protect computers, the software uses a signature match analysis to compare potential viruses against a database of known threats. It also uses analytics, which monitors software and other attributes to find new malware or threats that quickly change code to avoid detection. Anything that is marked suspicious is sent to Microsoft for further analysis.

Windows Defender runs in the background, but you can “snooze” it if you don’t want to be interrupted. You can also scan individual files or perform full scans. The defender also scans the new drives that are connected to your computer. If you are running the latest version of Windows 10, you have a capable protection suite with several useful tools and minimal impact on system performance. malwarebytes not opening looks great within the operating system, providing a proper defense for your computer.

One of the possible reasons why users cannot activate Windows Defender is third-party antivirus software installed on their Windows operating systems. Other reasons for this problem can be malware infections, software conflicts (possibly with another antivirus program), a corrupted registry, etc. In this guide, we present several possible solutions to this problem so that you can activate Windows Defender.

Restart the Windows Security Center service

Windows services (also known as services. MSC) are used to modify how Windows services run on your system. These services are responsible for running available programs and managing many system resources and settings. You can modify the configuration of the service for security, troubleshooting, and performance-related reasons. You must access Windows services to stop the Security Center service. The Windows Security Center service monitors and reports on the security status settings on the system. Health settings include firewall, antivirus, anti-spyware, Windows Update, and Internet settings. To restart this service, type “run” into the search and click the “run” result.

Uninstall third-party antivirus software

If there is any third-party antivirus software installed on the Windows operating system, Windows Defender will likely detect it and shut down. It is common practice to have multiple security software packages installed on a system; this will create a conflict between them. Therefore, consider uninstalling any third-party antivirus software if you want Windows Defender to work properly. After you have uninstalled your third-party antivirus software, type “Windows Defender” in Search and select the “Windows Defender Settings” result.

Update Windows

You can also try updating the current version of Windows installed on your system. It can also be helpful to check for updates for the entire Windows operating system. An outdated Windows operating system could cause the Windows Defender problem (not being able to turn it on). The latest signature updates are necessary for Windows Defender to keep your computer safe. Try checking for Windows updates and then update Windows Defender as well. To update Windows, type “Windows update” in the search and click the “Check for updates” result.