The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Troubleshoot slow game or app downloads on Xbox One Account error occurs when signing in to Xbox network

Xbox Support 提供有关 Xbox、Game Pass 和账单问题的帮助，并通过社区提供建议和客户服务。

If your organization is using multi-factor authentication (MFA) for Microsoft 365, the easiest verification method to use is the Microsoft Authenticator smart phone app.

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See how to view the details for signatures and certificates.

Certificate authority (CA) A certificate authority is an entity similar to a notary public. It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired. Top of Page Digital signature assurances The following terms and definitions show what assurances are provided by digital signatures. Authenticity The signer is ...

The Xbox Offline System Update (OSU) process allows you to update your console by downloading a file to a USB flash drive and then installing that file directly onto your Xbox Series X|S or Xbox One console.

Tap the button below to install the Microsoft 365 Copilot app for iOS that combines Word, Excel, and PowerPoint into a single app, which introduces new mobile-centric features to view, edit, and share files without the need to switch between multiple apps.

How to add a signature to your Word documents. You can also use the Signature Line command in Word to insert a line to show where to sign a document.