Windows セキュリティでウイルス対策機能を使って、マルウェア、ウイルス、その他の脅威から Windows PC を保護する方法を説明します。

Nhận trợ giúp và hỗ trợ cho Microsoft Edge. Tìm nội dung hỗ trợ, bài viết về cách thức, hướng dẫn và nhiều nội dung khác của Microsoft Edge.

If you know your username and password but they have stopped working, read My username and password have stopped working.. If you forgot your Microsoft account username or email address, and you have previously set up other security information on your Microsoft account, follow the steps below.

Windows 10, version 22H2 update history; July 23, 2024—KB5040525 (OS Build 19045.4717) Preview; July 9, 2024—KB5040427 (OS Builds 19044.4651 and 19045.4651)

Learn how to sign in, sign out, lock, and switch user account in Windows.

Learn more about the privacy settings for speech, voice activation, inking, and typing in Windows.

If you forgot your work or school password, never got a password from your organization, or have been locked out of your account, you can use your security info and your mobile device to reset your work or school password.

Learn about using a Windows Arm-based PC and get answers to common questions about Arm-based PCs.

Your Microsoft account dashboard is where you can manage your personal information and security settings, keep tabs on your subscriptions and order history, and manage your payment and billing options.

Informazioni su come installare, reinstallare o attivare Microsoft 365 o Office 2019 in un PC o un Mac.