About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.

Learn how the AI-driven Support Virtual Agent works and how it can help answer your Xbox support questions.

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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 It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.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 ...

Find out how to change your Xbox gamertag through a browser, on your Xbox console, or your Windows device.

To create an e-sign request, you’ll need to sign into your account with an available e-signature provider such as Adobe Sign or DocuSign. If you don't have account, it's easy to start a free trial or create an account. Choose the e-signature provider you'll use to create, send, and manage e-sign requests.

Xbox 已與 NVIDIA GeForce NOW 和 Boosteroid 合作，將第一方遊戲提供給更多玩家。 如果您在 Steam 上擁有受支援的 Xbox 遊戲，並擁有其中一個串流服務的帳戶，您隨時隨地都可以在雲端中玩您的遊戲。 只要確保您將 Steam 帳戶連結至 NVIDIA GeForce NOW 或 Boosteroid 即可。

获取将数字 Xbox 游戏或订阅作为礼品发送给他人时遇到的问题的帮助。

我们竭尽所能，确保 Xbox 网络是欢迎所有人的安全之处，但我们自己独木难支。 如果你认为某玩家违反了 Microsoft 服务协议和 Xbox 社区标准，请进行举报，帮助我们调查违规实例。

How to create or edit your Outlook signature for email messages. Include your signature, text, images, electronic business card, and logo.