この記事は、PC で TPM 2.0 が有効になっていない、または PC に TPM 2.0 を実行する機能はあっても、実行するように設定されていないために Windows 11 にアップグレードできないユーザーを対象としています。 このレベルの技術情報についてあまり知識がない場合は、PC メーカーのサポート情報を ...

Learn how to reset or change your Microsoft account password. Get help with a forgotten Microsoft account password.

Windows 11 is designed to bring you closer to what you love and is releasing at a time when the PC is playing an even more central role in the way we connect, create and play. When we made the decision on where to set the minimum system requirements for Window 11, we focused on three principles to guide our thinking to help ensure a great user experience:

Learn how to switch out of S mode to install apps from outside of the Microsoft Store or to upgrade to Windows 11.

The steps below describe how to change a known password. If you need to reset your password because you forgot it, see Reset your Microsoft account password instead.

Learn how to get ready for the Windows 11 upgrade, from making sure your device can run Windows 11 to backing up your files and installing Windows 11.

Learn how to recover files that have been lost, deleted, or accidentally changed.

Learn how you can free up drive space in Windows. Keep your PC running smoothly and up to date by increasing the disk space.

You can view and clear your Microsoft Edge browsing history stored on a single device, across all synced devices, and in the cloud. You may choose to clear your browsing history at any time.

Learn how to open a shared mailbox in Outlook. Shared mailboxes let a group of users view and send email, and share a calender, and open a contact list from a common mailbox.