Note The Windows Security app is a client interface on Windows 10, version 1703 and later. It is not the Windows Defender Security Center web portal console that is used to review and manage.

I own an Asus ROG Rampage V Extreme mother board with a Realtek High Definition Audio system. To my dismay the stereo mix has been. I accidently uninstalled Windows Defender for Windows 10. How do I reinstall it? [Moved from Windows] The Windows 10 update process resulted in Windows Defender being turned Off and I cannot manage to turn it on again. I simply get the message 'This app has been turned off and isn't monitoring your computer.

You can't uninstall the Windows Security app, but you can do one of the following: • Disable the interface on Windows Server 2016. • Hide all of the sections on client computers (see below). • Disable Windows Defender Antivirus, if needed. You can find more information about each section, including options for configuring the sections - such as hiding each of the sections - at the following topics: •, which has information and access to antivirus ransomware protection settings and notifications, including the Controlled folder access feature of Windows Defender Exploit Guard and sign-in to Microsoft OneDrive. •, which has information and access to sign-in and account protection settings.

•, which has information and access to firewall settings, including Windows Defender Firewall. •, covering Windows Defender SmartScreen settings and Exploit protection mitigations. •, which provides access to built-in device security settings. •, which has information about drivers, storage space, and general Windows Update issues. •, which includes access to parental controls along with tips and information for keeping kids safe online.

Important Windows Defender AV and the Windows Security app use similarly named services for specific purposes. The Windows Security app uses the Windows Security Service ( SecurityHealthService or Windows Security Health Servce), which in turn utilizes the Security Center service () to ensure the app provides the most up-to-date information about the protection status on the endpoint, including protection offered by third-party antivirus products, Windows Defender Firewall, third-party firewalls, and other security protection. These services do not affect the state of Windows Defender AV. Disabling or modifying these services will not disable Windows Defender AV, and will lead to a lowered protection state on the endpoint, even if you are using a third-party antivirus product.

Windows Defender AV will be. Disabling the Windows Security Center service will not disable Windows Defender AV.

Warning If you disable the Security Center service, or configure its associated Group Policy settings to prevent it from starting or running, the Windows Security app may display stale or inaccurate information about any antivirus or firewall products you have installed on the device. It may also prevent Windows Defender AV from enabling itself if you have an old or outdated third-party antivirus, or if you uninstall any third-party antivirus products you may have previously installed. This will significantly lower the protection of your device and could lead to malware infection. The Windows Security app operates as a separate app or process from each of the individual features, and will display notifications through the Action Center. It acts as a collector or single place to see the status and perform some configuration for each of the features. Disabling any of the individual features (through Group Policy or other management tools, such as System Center Configuration Manager) will prevent that feature from reporting its status in the Windows Security app.