Learn how to run a disk cleanup in Windows including deleting temporary and system files to free up disk space.

获取 Windows 操作系统的官方支持和帮助信息，以及如何使用 Windows 的指南。

Learn how to shut down, sleep, or hibernate your PC. When you’re ready to make your PC sleep, just press the power button on your desktop, tablet, or laptop, or close your laptop’s lid.

Follow these steps to temporarily turn off Defender antivirus protection in Windows Security. Keep in mind that if you do, your device may be vulnerable to threats.

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.

忘れた場合や紛失した場合に Windows パスワードを変更またはリセットする方法について説明します。

Discover the latest features in Office 2021, including new ways to create content, manage data, and communicate effectively.

If you're trying to add your Outlook.com account to Outlook or another mail app, you might need the POP, IMAP, or SMTP settings. You can find them below or by viewing them in your Outlook.com settings.. Outlook and Outlook.com may be able to detect your account's mailbox settings automatically, but for other non-Microsoft accounts, you may need to contact your email provider for their settings.

Get a brief explanation about logging on as an administrator and making changes to other user accounts on your computer.

Learn how to reset your PIN if you aren't signed in to Windows and having trouble using your PIN.