Latest signature updates are necessary for Windows Defender to keep your computer secure. An outdated Windows operating system could cause the Windows Defender issue (not being able to turn it on). Checking for updates for the entire Windows operating system might also help. You can also try to update the current version of Windows installed on your system. If turned off, toggle the switch to the "On" position to turn it on.
In the Windows Defender settings window, click "Open Windows Defender Security Center".Ĭlick "Virus & threat protection settings".Įnsure that "Real-time protection" is on - this locates and stops malware from installing or running on your device. After you have uninstalled third-party antivirus software, type "windows defender" in Search and select the "Windows Defender settings" result. Therefore, consider uninstalling any third-party antivirus software if you want Windows Defender to work properly. It is usual practice to have multiple security software packages installed on a system, creating conflict between them. If any third-party antivirus software is installed on the Windows operating system, Windows Defender will probably detect it and shut itself down. Uninstall Third-Party Antivirus Software Wait a few seconds until the service has stopped, click "Start", and it will be started again. In the Properties windows, find and click "Stop". Select "Restart" from the drop-down menu.Īnother way to restart the Windows Security Center service is to select "Properties" in the drop-down menu when right-clicking on this service. In the Services window, find the "Security Center" service and right-click on it. In the Run dialog box, type "services.msc" and click "OK" to open Windows Services. To restart this service, type "run" in Search and click the "Run" result. The health settings include firewall, antivirus, anti-spyware, Windows Update, and Internet settings. Windows Security Center service monitors and reports security health settings on the system. You need to access Windows Services to stop the Security Center service. You can change a service's settings for security, troubleshooting, and performance-related reasons. These services are responsible for running available programs and managing many system settings and resources. Windows Services (also known as services.msc) modify how Windows services run on your system. Combo Cleaner is owned and operated by Rcs Lt, the parent company of read more.
You will need to purchase the full version to remove infections and eliminate computer errors. It is recommended to run a free scan with Combo Cleaner - a tool to detect malware and fix computer errors.
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