Training: You can back up your important folders on your PC with OneDrive, so they're protected and available on other devices.

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Fresh Start in Windows 10 lets you perform a clean reinstallation and update of Windows while keeping your personal data and most Windows settings intact.

Hier erfahren Sie, wie Sie das Kennwort Ihres Microsoft-Kontos ändern oder zurücksetzen. Erhalten Sie Hilfe bei einem vergessenen Microsoft-Konto Kennwort.

Learn how to retrieve a forgotten username or password for your Office for home or Office for business account.

Windows 11 の最小システム要件と、アップグレードの適格性を評価する方法の詳細をご覧ください。

This article describes the formula syntax and usage of the WEEKNUM function in Microsoft Excel.. Description. Returns the week number of a specific date. For example, the week containing January 1 is the first week of the year, and is numbered week 1.

How to create simple formulas in Excel using AutoSum and the SUM function, along with the add, subtract, multiply, or divide values in your worksheet.

Learn how to use mail merge in Word to create custom documents, envelopes, email, and labels with individualized elements for each recipient.

This article describes the formula syntax and usage of the SUBSTITUTE function in Microsoft Excel.. Description. Substitutes new_text for old_text in a text string. Use SUBSTITUTE when you want to replace specific text in a text string; use REPLACE when you want to replace any text that occurs in a specific location in a text string.