Learn how to sign in and create app passwords for Microsoft apps and devices that don't support two-step verification.

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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 It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.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 identify and open encrypted and protected emails no matter what email client you're using.

You can use the Microsoft 365 Copilot app to read and take action on emails in shared mailboxes and delegate mailboxes. For example, you can read emails, draft responses, and summarize emails.

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

You'll have the option to confirm your identity via email, phone or the Microsoft account App. After you've completed this step, you'll need to use an app-specific password to log in via the Outlook App.

Important: You don't need to remove old security information unless there is an account security risk (e.g. someone else has access to your old mailbox). If you do need to replace your security information, make sure you add new information first. If you request removal of all security information in your account, the account is put into a restricted state for 30-days. Your information doesn't ...

Learn how to receive and interpret activity reports of your child's device use, including web browsing, apps and games usage, and screen time.

When you sign into the account for the first time on a new device or app (like a web browser) you need more than just the username and password. You need a second verification method - what we call a second "factor" - to prove who you are.