Obtain a digital certificate and create a digital signature
About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Word 2024, Word 2021, Word 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Office 2016
Get more help | Xbox Support
Need help with an Xbox console, an Xbox game, or Xbox network? Find out how to get in touch with us.
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Digital signatures and certificates - Microsoft Support
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 It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.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 ...
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, Visio Plan 2, Excel 2024, PowerPoint 2024, Access 2024, Excel 2021, Word 2021, PowerPoint 2021, Access 2021, Visio Professional 2021, Visio Standard 2021, Excel 2019, Word 2019, PowerPoint 2019, Access 2019, Visio Professional 2019, Visio Standard 2019, Excel 2016, Word 2016, PowerPoint 2016, Access 2016, Visio Professional 2016, Visio Standard 2016
Secure messages with a digital ID in Outlook - Microsoft Support
Signing your email messages with a digital ID helps to prove your identity and prevent message tampering.
Applies To:
Outlook for Microsoft 365, Outlook 2024, Outlook 2021, Outlook 2019, Outlook 2016, New Outlook for Windows
Request a refund for digital games | Xbox Support
Find out how to submit a request for a refund for a purchase of digital Xbox content.
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Account & profile | Xbox Support
Find everything you need to manage your Microsoft account, Xbox profile, and more.
Xbox Status | Xbox Support
Troubleshoot slow game or app downloads on Xbox One Account error occurs when signing in to Xbox network
How to get and use app passwords - Microsoft Support
Learn how to sign in and create app passwords for Microsoft apps and devices that don't support two-step verification.