Learn how to check for, download, and install KB 2919355, an update for Windows 8.1 and Windows RT 8.1.

Learn how to identify a phishing scam, designed to steal money via fake emails.

Узнайте, как использовать функции панели задач в Windows 11. Скрытие панели задач, закрепление приложения, изменение расположения и другие параметры панели задач.

This content can help you with your work or school account, which is the account provided to you by your organization (for example, dritan@contoso.com).

Apply the latest Office Theme (font and colors) to your Microsoft 365 applications.

Get help with your questions about Microsoft Teams from our how-to articles, tutorials, and support content.

Learn how to set up a connection to a proxy server on your Windows PC.

Summary. This security update makes improvements to Secure Boot DBX for the supported Windows versions listed in the "Applies to" section. Key changes include the following:

Play MP4 files in Windows 10 by right-clicking the file and choosing what application to open it with.

Learn how to troubleshoot Bluetooth problems in Windows. Resolve issues connecting a Bluetooth device or accessory.