Microsoft Support
Microsoft Support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.
How to check if an app or program is installed in Windows
To find out if an app or program is installed in Windows, select Start > Settings > Apps.
下载Microsoft Authenticator - Microsoft 支持
注意: Microsoft Authenticator 不适用于电脑或 Mac，因为出于安全原因，验证器应用通常用于智能手机。 了解详细信息。 Microsoft不再支持超过一年的 Authenticator 版本。 始终使设备保持最新状态。 从 2025 年 7 月开始，Authenticator 中的自动填充功能将停止工作，并且从 2025 年 8 月起，密码将不再可在 ...
Fix problems that block programs from being installed or removed
The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs.
Automatic file download notifications in Windows - Microsoft Support
Learn how to manage automatic file downloads from your Windows apps when you use an online storage provider, such as OneDrive Files On-Demand.
Document collaboration and co-authoring - Microsoft Support
Discover the benefits to co-authoring documents in your organization and learn about versioning, checkin/checkout, and mixed Office environments.
Applies To:
SharePoint Server Subscription Edition, SharePoint Server 2019, SharePoint Server 2016, SharePoint in Microsoft 365, OneDrive (work or school), Microsoft Office, OneDrive (home or personal), OneDrive for Business, OneDrive for Mac, OneDrive for Windows
Download files from the web - Microsoft Support
Learn how to download files from the web, change your default download location, and find files you've downloaded on your PC using Internet Explorer.
تنزيل Microsoft 365 أو Office 2024 أو تثبيته أو إعادة تثبيته على جهاز ...
هل أنت جاهز لتثبيت البرنامج؟ قبل البدء، تأكد من أن الكمبيوتر الشخصي أو جهاز Mac يلبي متطلبات النظام. إذا قمت بالفعل باسترداد مفتاح منتج أو إعادة تثبيت التطبيقات أو كان لديك ترخيص معين من خلال العمل أو المؤسسة التعليمية ...
Applies To:
Office 2024, Office 2024 for Mac, Microsoft 365 for home, Microsoft365.com, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Using Copilot Voice with Microsoft Copilot - Microsoft Support
Microsoft Copilot Voice allows you to interact with Microsoft Copilot using natural language voice commands.
Enable Virtualization on Windows - Microsoft Support
Virtualization lets your Windows device emulate a different operating system, like Android or Linux. Enabling virtualization gives you access to a larger library of apps to use and install on your device. If you upgraded your device from Windows 10 to Windows 11, these steps help you enable virtualization.