You can add invisible digital signatures to Word documents, Excel workbooks, and PowerPoint presentations. Signed documents will have the Signatures button at the bottom of the document.

This article explains how you can get or create a digital signature for use in Office documents. To learn more about how to use them in Office documents, see Add or remove a digital signature …

A digital signature is an electronic, encrypted, stamp of authentication on digital information such as email messages, macros, or electronic documents. A signature confirms that the …

A Collect Signatures workflow is a SharePoint products feature that routes a document or form created in Word, Excel, or InfoPath to one or more people for their signature.

This article describes how you can digitally sign a macro project on Windows by using a certificate. If you don't already have a digital certificate, you'll need to get one.

If you sign in to Windows using your work or school account, you'll be signed in to Microsoft 365 or Office automatically. On Macs and mobile devices, sign in using your work or school …

Find Microsoft Excel help and learning resources. Explore how-to articles, guides, training videos, and tips to efficiently use Excel.

Training: Learn how to create a spreadsheet, enter data, and create a chart in Excel.

With Microsoft 365 and OneDrive or SharePoint, multiple people can work together on aWord document, Excel spreadsheet, or PowerPoint presentation. When everyone is working at the …

Excel Live is a collaborative feature in Microsoft Teams where team members can edit and explore Excel documents directly in Teams meeting window.