A popular tactic of criminals is the "fake order" scam. The way it works is that you get a message, usually in email or text, that appears to be a routine confirmation for an order. Of course, you never ordered whatever product or service it's confirming. The message looks common enough, and it says that money will be charged to your credit card or withdrawn from your bank account for the ...

Find everything you need to manage your Microsoft account, Xbox profile, and more.

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Learn how to redeem prepaid codes for Xbox games, subscriptions, or downloadable content using your account.

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

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

Find out how to submit a request for a refund for a purchase of digital Xbox content.

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 It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.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

Passkeys are supported on desktop and mobile browsers (mobile app support is coming soon). You can use Windows Hello on Windows 10/11 devices to sign into your account with a passkey.

This troubleshooter assists customers whose machines are not yet updated to the latest release, Windows 10 Version 1607. This update will initially be released only to a small set of targeted customers. This set will expand over time. Windows users can start the assistant from this article.