Summary. The first hours of a newly installed Windows deployment can leave the system vulnerable because of a Microsoft Defender protection gap.

The S/MIME control is necessary to verify the signatures of digitally signed messages, but a certificate is not. If you receive a message that's been encrypted or digitally signed and you haven't installed the S/MIME control, you'll see a warning in the message header notifying you that the S/MIME control isn't available.

在 Windows Server 2012 中，适用于 Microsoft Windows 的更新 (KB4486081) 显示在“控制面板”的“已安装的更新”下。 在 Windows RT 8.1、Windows 8.1 或 Windows Server 2012 R2 中，适用于 Microsoft Windows 的更新 (KB4486105) 显示在“控制面板”的“已安装的更新”下。

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.

The storage remains separate, so you can't sync work or school folders to your OneDrive personal folders, but you can copy or drag and drop files from one to another. Learn more. Add accounts on your PC. Having different accounts on a shared Windows PC lets multiple people use the same device, while giving everyone their own sign-in info ...

Email addresses and phone numbers associated with your Microsoft account are called aliases and they use the same contacts, online storage, subscriptions, and account settings.

启用双重验证或设置 Authenticator 应用后，如果使用较旧的设备 (（如 Xbox 360）或不支持双重验证的邮件发送安全摄像头) ，可能会遇到问题。. 对于这些设备，可以改为使用应用密码登录。 应用密码是随机生成的长密码，在登录不支持双重验证的应用和设备时，你只需提供一次此密码而非常规密码。

Avant de commencer. Assurez-vous que l’appareil sur lequel vous souhaitez installer Windows 11 dispose de la configuration minimale requise.Si votre appareil exécute actuellement Windows 10, nous vous recommandons de vérifier la configuration minimale requise à l’aide de l’Application Contrôle d'intégrité du PC.Nous vous déconseillons d’installer Windows 11 sur un appareil qui ...

Change the colors of your flow chart. To quickly add a designer-quality look and polish to your SmartArt graphic, you can change the colors or apply a SmartArt Style to your flow chart.

Windows 11 im S Modus ist auf Sicherheit und Leistung ausgelegt und führt ausschließlich Apps aus dem Microsoft Store aus. Wenn Sie eine App installieren möchten, die im Microsoft Store nicht verfügbar ist, müssen Sie den S-Modus verlassen.