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

Learn how you can use the free Microsoft Authenticator app to sign in to all your accounts without using a password.

Omega Ring (2606.260609-2200) Hey XBOX Insiders! We are releasing a new XBOX Update Preview to the Omega ring today. Continue reading below to learn all about what's included with this update.

Phishing (pronounced: fishing) is an attack that attempts to steal your money, or your identity, by getting you to reveal personal information -- such as credit card numbers, bank information, or passwords -- on websites that pretend to be legitimate. Cybercriminals typically pretend to be reputable companies, friends, or acquaintances in a fake message, which contains a link to a phishing ...

試試看！ 當您需要文件簽名時，無需向人員發送多份草稿或來回電子郵件。 現在，您可以在電子簽署請求中附加文件，並直接在桌面或行動裝置上的「核准」中傳送文件。 附註: 透過 Adobe Sign 和 DocuSign 進行核准，在 Government Community Cloud 中無法使用。

Microsoft will never proactively reach out to you to provide unsolicited PC or technical support. If you receive a phone call claiming to be from Microsoft, or see a pop-up window on your PC with a fake warning message and a phone number to call and get your "issue" fixed, it's better to be safe and not click any links or provide any personal information.

You can resolve problems with Microsoft Authenticator by checking the tips in this article and reviewing some of the known errors.

如果安全服務無法對該應用程式做出有把握的預測，Smart App Control 會檢查該應用程式是否有有效的簽名。 如果應用程式有有效的簽名，Smart App Control 會允許它執行。 如果應用程式未簽署或簽名無效，Smart App Control 會視為不信任並封鎖以保護你。

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 It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.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

Learn how to go passwordless on Windows with Windows Hello and your Microsoft account.