Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.

Explore OneDrive support, help, and learning resources. Learn how to protect your important files, documents, and memories with OneDrive.

Learn how to turn on device encryption, or standard BitLocker encryption in Windows.

Learn how to troubleshoot problems updating Windows. Find answers to common questions and issues installing Windows updates.

Learn how to locate and manage your app permissions on Windows devices. Some apps or games need specific permissions to work properly.

If you need help with Outlook.com, you can read our self-help content, or get support via email.

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

Windows で Bluetooth デバイスを接続し、Bluetooth ペアリング設定を調整する方法について説明します。

Windows Photo Viewer isn't part of Windows 10, but if you upgraded from Windows 7 or Windows 8.1, you might still have it. To check, press and hold (or right-click) a photo in File Explorer, and select Open with.If Windows Photo Viewer isn't in the list, you cannot install it on Windows 10.

Learn how to use virus and threat protection options in Windows Security to scan your device for threats and view the results.