- Add or remove a digital signature for Microsoft 365 files
Learn about digital signatures, digital IDs, and signature lines to use in Word, Excel, and PowerPoint
- Digital signatures and certificates - Microsoft Support
Digital signatures support this change by providing assurances about the validity and authenticity of a digital document For more information, see Add or remove a digital signature in Office files
- Enable or disable digital signatures - Microsoft Support
A digital signature is used to authenticate digital information — such as form templates, forms, e-mail messages, and documents — by using computer cryptography Once a form is signed, either the entire form or part of the form that was signed cannot be altered without invalidating the signature
- 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
- Obtain a digital certificate and create a digital signature - Microsoft . . .
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 in Office files
- Add a signature line to a Word document on a mobile device
For general information about adding a digital signature line to a Word or Excel file, go to Add or remove a digital signature for Microsoft 365 files To add a signature line, use the return key to position the cursor where you want the line to begin
- Show trust by adding a digital signature - Microsoft Support
You can package the file, apply a digital signature to the package, and then distribute the signed package to other users The Package-and-Sign feature places the database in an Access Deployment ( accdc) file, signs the file, and then places the signed package at a location that you determine
- Secure messages with a digital ID in Outlook - Microsoft Support
If you don't see the Sign Message button, you might not have a digital ID configured to digitally sign messages, and you need to do the following to install a digital signature
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