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

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If you see error E207 when you try to turn on or update your Xbox console, this means there may have been a problem installing the update. Find more solutions here.

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 It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.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

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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 The message looks common enough, and it says that money will be charged to your credit card or withdrawn from your bank account for the ...

Alpha Ring (2506.250612-1215) Hey Xbox Insiders! We are releasing a new Xbox Update Preview to the Alpha ring today. Continue reading below to learn all about what's included with this update.

This article explains how to get your vCard (.vcf file) into CSV format so you can import your contacts into Outlook. IMPORTANT: Make sure you've exported all of your contacts from iCloud! The most common mistake we see customers make is they export only 1 contact from iCloud when they intended to export all of them. For instructions on exporting all of your contacts from iCloud, see Export ...

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

Create a custom signature block with a picture and social networking icons to add as a new signature for your email messages.