Learn how to improve Windows PC performance if your device is running slowly.

Find help and support content for Microsoft Phone Link. Learn time-saving tips and explore how you can use Phone Link to stay productive.

Describes the Windows Installer 3.1 v2 download that is available as a redistributable system component for Windows 2000 SP3, Windows 2000 SP4, Windows XP, Windows XP SP2, and Windows Server 2003.

BitLocker Drive Encryption allows you to manually encrypt a specific drive or drives on a device running Windows Pro, Enterprise, or Education edition. For devices managed by an organization, BitLocker Drive Encryption is usually managed by the IT department, as encryption might be required by organizational policies.

A file in SharePoint, OneDrive, or Teams is blocked. What do you do? Read this article to learn why this is happening and steps you can take.

[電腦健康情況檢查] 應用程式會提供您 Windows 裝置健康情況最新資訊，協助您採取動作來改善裝置效能，並疑難排解效能問題。 它會根據客戶的意見反應定期更新，協助您充分利用 Windows 電腦。

PPMT 函数语法具有下列参数： Rate 必需。 各期利率。 per 必需。 指定期数，该值必须在 1 到 nper 范围内。 Nper 必需。 年金的付款总期数。 pv 必需。 现值即一系列未来付款当前值的总和。 fv 可选。 未来值，或在最后一次付款后希望得到的现金余额。 如果省略 fv，则假定其值为 0（零），即贷款的 ...

Learn how to use a health report in Windows Security to manage your device performance and keep your device secure.

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.

Resolve Windows blue screen errors with tips and resources to do your own troubleshooting, or contact the Microsoft support if you need more help.