Describes how to investigate items in an Outlook Data File (.pst) and troubleshoot search issues.

Learn how to use the taskbar features in Windows. Hide the taskbar, pin an app, change the location, and more with taskbar settings.

See an alert in a pop-up window on the bottom of Windows desktop when new email messages arrive in your Outlook Inbox.

Learn how to remove passwords from your Microsoft account to increase security.

KB5034441: Windows Recovery Environment update for Windows 10, version 21H2 and 22H2: January 9, 2024

Learn how to contact Microsoft Store support to get help for your payment and billing issue.

Training: Get started with SharePoint in Microsoft 365. At office.com, sign in to SharePoint, then select the SharePoint tile.

Use your Microsoft account to sign in to Microsoft services like Windows, Microsoft 365, OneDrive, Skype, Outlook, and Xbox Live.

If you're not sure which OneDrive version is better for you, you can review the reasons to choose the 64-bit version, the 32-bit version, ARM64 version for Windows, or the Apple silicon version for Mac. If you know what version you want, you can learn how to install it.. If you already have OneDrive, but you're not sure which version you have, check out Which version of OneDrive am I using?

如果您要使用 Excel 試算表查詢增益集內的工具，但在 Excel 功能區中看不到 [Inquire] 索引標籤。 您首先必須開啟 Inquire 增益集。 按一下 [檔案] > [選項] > [增益集]。