Invisible digital signatures in Word, Excel, or PowerPoint. An invisible digital signature, like a visible digital signature line, assures the authenticity, integrity, and origin of a document.

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Microsoft Defender is a security app that helps people and families stay safer online with malware protection, web protection, real-time security notifications, and security tips.Microsoft Defender is included in a Microsoft 365 Family or Personal subscription and works on your phone (Android or iOS), PC, and Mac.

Select Review activity to check for any unusual sign-in attempts on the Recent activity page.If you see account activity that you're sure wasn't yours, let us know and we can help secure your account—if it's in the Unusual activity section, you can expand the activity and select This wasn't me.If it's in the Recent activity section, you can expand the activity and select Secure your account.

To enhance your Microsoft 365 experience in new Outlook for Windows, Outlook.com, Outlook for iOS, Outlook for Android, and new Outlook for Mac, you can now sync your non-Microsoft accounts (including their emails, contacts, and events) to the Microsoft Cloud.

Disable add-ins. In the upper-left corner of Outlook, choose File > Options > Add-ins. At the bottom of the View and manage Office Add-ins, make sure the Manage box shows COM Add-ins, and then choose Go. As a precaution, when the COM Add-ins listing of your current add-ins opens, do one of the following:

What is a security key? We currently support several designs and providers of security keys using the Fast Identity Online (FIDO2) passwordless authentication protocols. These keys allow you to sign in to your work or school account to access your organization's cloud-based resources when on a supported device and web browser.

No. Microsoft 365 is a subscription service that makes sure you always have the most up-to-date modern productivity tools. Microsoft 365 already has all the features that will be coming to Office 2021 and Office LTSC, including such features as real-time collaboration as well as other advanced productivity and security features not found in Office 2021 or Office LTSC.

Note The Queries & Connections pane is available in Microsoft Office 365 for Excel and Excel stand-alone version 2019 or later. It replaced the Workbook Connections dialog box which is available in desktop versions of Excel.. The Queries & Connections pane (Select Data > Queries & Connections) In one location, you can get to all the information and commands you need to work with your external ...

Training: With Microsoft Outlook on your PC, Mac or mobile device, you can organize email, share your calendar, schedule meetings, and share files. Watch this online video.