How to use the SUMIFS function in Excel, one of Excel’s math and trig functions, to add arguments that meet multiple criteria.

使用 vlookup、hlookup 和其他函數 (例如 index 和 match)，搜尋並找出那些以輸入值為基礎的資料。 本文可讓您快速瞭解 vlookup 進修課程，還可連結至其他資訊。

Outlook Data Files contain your email messages, calendar, tasks, and other items on your computer.

Learn how to change the refresh rate for your display in Windows to determine how smoothly motion appears on your screen.

Learn how to use the privacy dashboard in your Microsoft account and manage your privacy settings for products you use.

Learn how to protect your PC, identity, and data from tech support scams.

Learn how to delete and restore files in OneDrive. Recover deleted files or folders from the OneDrive recycle bin.

Learn how to cancel your Microsoft subscriptions such as Microsoft 365, Copilot Pro and Xbox. Troubleshoot issues if you can't cancel your subscription.

Important: When you close your Microsoft account, your email and contacts are deleted from our servers and can't be recovered.If you use your Microsoft account with Xbox, Skype, OneDrive, or other Microsoft services, you'll no longer be able to access those services.

Learn how to use InPrivate browsing in Microsoft Edge if you don't want your browsing data saved on your PC.