Obtain a digital certificate and create a digital signature
To digitally sign an Office document, you must have a current (not expired) digital certificate. Digital certificates are typically issued by a certificate authority (CA), which is a trusted third-party entity that issues digital certificates for use by other parties.
Add or remove a digital signature for Microsoft 365 files
In the document or worksheet, place your pointer where you want to create a signature line. On the Insert tab, select Signature Line in the Text group. Suggested signer: The signer's full name. Suggested signer's title: The signer's title, if any. Suggested signer's e-mail address: The signer's e-mail address, if needed.
View digital signature and certificate details - Microsoft Support
You can view information about a digital signature, or the certificate that is used to create the digital signature, in Word, PowerPoint, and Excel. For more information on adding or removing digital signatures, see Add or remove a digital signature.
Digital signatures and certificates - Microsoft Support
More and more people and organizations are using digital documents instead of paper documents to conduct day-to-day transactions. By reducing dependency on paper documents, we are protecting the environment and saving the planet’s resources.
Digitally sign your VBA macro project - Microsoft Support
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. Tip: To use or test macro projects on your own computer, you can create your own self-signing certificate by using the Selfcert.exe tool.
View additional information and hidden content that has been …
When you digitally sign a Microsoft 365 document, the digital signature applies to the contents of the document, including the information in the contents of a document that might not be visible in the current view of a document.
View or change the properties for an Office file - Microsoft Support
There are four types of document properties: Standard properties - By default, Microsoft 365 documents are associated with a set of standard properties, such as author, title, and subject. You can specify your own text values for these properties to make it easier to organize and identify your documents.
Create a form with Microsoft Forms - Microsoft Support
With Microsoft Forms, you can build survey forms and easily share them with students, parents, and colleagues.
I am getting license validation errors with Copilot
Some users may encounter an issue when trying to access Microsoft 365 Copilot in Microsoft 365 apps when the file is hosted in a third-party storage location. In this scenario, users may …
Outline (group) data in a worksheet - Microsoft Support
If you have a list of data you want to group and summarize, you can create an outline of up to eight levels. Each inner level, represented by a higher number in the outline symbols, displays detail data for the preceding outer level, represented by a lower number in the outline symbols.
Change the date system, format, or two-digit year interpretation
Both Excel for Mac and Excel for Windows support the 1900 and 1904 date systems. The default date system for Excel for Windows is 1900; and the default date system for Excel for Mac is 1904.