Don't forget to include your license ID or agreement number, your contact phone number & email address so we can contact you. If you already have a volume licensing support case number, you may be in a location where you can phone the Volume Licensing support team.

Microsoft Support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows 11, Surface, and more.

Contact times (Philippine Time) Web chat Get accessibility help Accessible help and resources to get your Xbox questions answered.

A phishing email is an email that appears legitimate but is actually an attempt to get your personal information or steal your money. Some deceptive emails appear to be from a safe sender but, in fact, have a "spoofed" source address to fool you. Here are some ways to deal with phishing and spoofing scams in Outlook.com. Spoof intelligence in Exchange Online Protection helps prevent phishing ...

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 It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.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

Get help for the account you use with Microsoft. Find how to set up Microsoft account, protect it, and use it to manage your services and subscriptions.

Find answers to some of your questions about Xbox enforcement actions.

It uses two different forms of identity: your password, and a contact method (also known as security info). Even if someone else finds your password, they'll be stopped if they don't have access to your security info.

If you're a user at a business and you're getting errors, contact the person who manages your business's internal website. These types of problems can often only be fixed by the webmaster (SharePoint admin) or someone at your company.

See how to view the details for signatures and certificates.