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Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

Obtenga información sobre cómo instalar, reinstalar o activar Microsoft 365 u Office 2019 en un equipo PC o Mac.

Windows Security is pre-installed on Windows 10 and ready for you to use at any time.

请执行以下任一操作： 在 “翻译为 ”下拉列表中，选择要将页面翻译成的语言。 默认值是为Microsoft Edge设置的语言。

As you browse the web, you'll see an icon in the address bar that indicates the security of the connection to the site you're visiting. This icon helps you determine if you can safely send and receive information from the site.

Learn how to turn on device encryption, or standard BitLocker encryption in Windows.

Find out how to stop your screen from flickering after the upgrade to Windows 10.

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

In Windows 11, apps don't automatically get added to your desktop. Learn how to pin apps to your desktop or taskbar in Windows 11 or Windows 10.