See how to view the details for signatures and certificates.

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Learn how to fix Error 0xC03F70003 so you can download an Xbox Game Pass game on your PC.

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 It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.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

Check the Xbox services, games, and apps for any service outages.

Get security info and tips about threat prevention, detection, and troubleshooting. Including tech support scams, phishing, and malware.

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.

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

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 ...

A BitLocker recovery key is needed when BitLocker can’t automatically unlock an encrypted drive in Windows. This key, which is a 48-digit number, is used to regain access to the drive.