The Office app is running in the background. If the file is not shared on a network or if you are certain that no one is currently editing it, then an instance of the Office app with the file open might be running in the background.

Windows 10 Home から Windows 10 Pro に、または Windows 11 Home から Windows 11 Pro にアップグレードする方法について説明します。有効なプロダクト キーや Microsoft Store の使用方法なども説明します。

Notes: Meeting recordings won't capture whiteboards, annotations, shared notes or content shared in the stage view by apps, and also won't include videos or animations embedded in PowerPoint Live presentations.

Learn how to troubleshoot File Explorer problems in Windows. To open File Explorer in Windows 10, select its icon on the taskbar, press the Windows logo key + E on your keyboard, or select Start > Documents (directly beneath your user icon).. Here are some things to try if File Explorer won't open.

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32-bit Arm apps available from the Store in Windows are not supported by Mac computers with M1, M2, and M3 chips. 32-bit Arm apps are in the process of being deprecated for all Arm versions of Windows.

Microsoft アカウントに関連付けられているメール アドレスと電話番号は エイリアスと呼ばれ、同じ連絡先、オンライン ストレージ、サブスクリプション、アカウント設定を使用します。

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

A list of Excel training, from entry level to advanced skills, plus templates and other resources.

For information about Windows update terminology, see the article about the types of Windows updates and the monthly quality update types. Note Follow @WindowsUpdate to find out when new content is published to the Windows release health dashboard.