Internet Explorer 11 support ended on June 15, 2022. Switch to Microsoft Edge for a faster, more secure and more modern web browsing experience.

Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

Data Execution Prevention (DEP) is a technology built into Windows that helps protect you from malicious code launching from areas of memory that have been designated as for data only.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Tips: If you want, you can apply the criteria to one range and sum the corresponding values in a different range. For example, the formula =SUMIF(B2:B5, "John", C2:C5) sums only the values in the range C2:C5, where the corresponding cells in the range B2:B5 equal "John.". To sum cells based on multiple criteria, see SUMIFS function.

Find everything you need to manage your Xbox account, profile, and more.

Under Personalization & advertising, turn on or off the setting for Allow Microsoft to save your browsing activity including history, usage, favorites, web content, and other browsing data to personalize Microsoft Edge and Microsoft services like ads, search, shopping and news.

Windows 10 と Windows 11には、最新のウイルス対策の保護を提供する Windows セキュリティが含まれています。 お使いのデバイスは、Windows を起動した瞬間からアクティブに保護されます。

To create a number format that includes text that is typed in a cell, insert an "at" sign (@) in the text section of the number format code section at the point where you want the typed text to be displayed in the cell.

This article explains how to get your vCard (.vcf file) into CSV format so you can import your contacts into Outlook. IMPORTANT: Make sure you've exported all of your contacts from iCloud!The most common mistake we see customers make is they export only 1 contact from iCloud when they intended to export all of them.