Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features. Select the Download button on this page. In the File Download dialog box, click Run or Open, and then follow the steps in the Windows Security Troubleshooter.

Method 1: Make sure that Security Center is configured correctly. Press Win + R keyboard shortcut, type services.msc, and then press ENTER. If you are prompted for confirmation, click Yes. Double-click Security Center. Click the General tab, select Automatic (delayed start) from the Startup type list, click Start, and then click OK.

This update provides latest updates for Windows Security platform, which is comprised of the Windows Security app and its underlying service. To obtain the current version of Windows Security app, please run powershell command below:

Windows Android Mac. From the Microsoft Defender dashboard. Select Device details. Select Manage in Windows Security. Select Quick scan. Tips: If you want a deeper scan, instead of selecting Quick scan in step 3, select Scan options and choose the type of scan you want. For the most complete scan, run Microsoft Defender Offline.

Select Start > Settings > Update & Security > Windows Security > Virus & threat protection. Select Check for updates (or Virus & threat protection updates in previous versions of Windows 10). Under Security Intelligence, select Check for updates. If Windows Security finds a new signature, it will download and install it.

How to update Windows Security. Security Windows 10. Windows Update downloads updates for Windows Security automatically to help keep your device safe and protect it from attacks. Check for Windows updates.

Windows Security provides built-in security options to help protect your device from malicious software attacks. To access the features described below, tap the Windows Start button, type windows security, select it from the results, and then select Device security. Notes: What you actually see on the Device security page may vary depending ...

Firewall & network protection in Windows Security lets you view the status of Microsoft Defender Firewall and see what networks your device is connected to. You can turn Microsoft Defender Firewall on or off and access advanced Microsoft Defender Firewall options for the following network types: If you want to change a setting, select the ...

Select the product you need help with. We'll show you self-help options first. Additional help is available if you need it, including live chat with a Microsoft specialist. Microsoft 365. Office. Windows. Xbox. Surface devices. Copilot.

Update Windows. In Windows 11, you decide when and how to get the latest updates to keep your device running smoothly and securely. To manage your options and see available updates, select Check for Windows updates. Or select Start > Settings > Windows Update . Here's some other info you might be looking for: