Signing certificate and certificate authority. Signing certificate To create a digital signature, you need a signing certificate, which proves identity. When you send a digitally-signed macro or document, you also send your certificate and public key.

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.

Exporting your document as a PDF is a convenient way create a shareable copy of your document while preserving its formatting. Here's how do it in Word Online. At the top of your screen, select File. In the displayed list of options, select Export.

For technical support, go to Contact Microsoft Support, enter your problem and select Get Help. If you still need help, select Contact Support to be routed to the best support option. Learn how to manage your Microsoft account security info and troubleshoot verification code issues.

Mouse and Keyboard Center download. The Microsoft Mouse and Keyboard Center is an app that helps you make the most out of your Microsoft keyboard and mouse. Mouse and Keyboard Center helps you personalize and customize how you work on your PC. This app is not available for Windows S mode . Download the latest release of Mouse and Keyboard ...

If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install Office, or you can renew your Microsoft 365 subscription. Tip: Get tech expertise with Business Assist.

Try Microsoft Update or contact your company help desk. To download an update manually, see Office Updates. If you would like to update Office but can't open any of your Office apps, try repairing your Office suite: Go to Control Panel > Programs > Uninstall a program.

For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn. For Microsoft 365 Germany go to portal.office.de. This completes the download of Microsoft 365 to your device. To complete the installation, follow the prompts in the "Install Microsoft 365" section below.

To add or edit text in a PDF that was made in an Office program like Excel or Publisher, start with the original Office file. Open that file in your Office program, make your changes, and then save the file in PDF format again.

Download the offline installer from your account portal. To download the offline installer, go to www.office.com. If you're not already signed in with the Microsoft account associated with your copy of Microsoft 365 or Microsoft 365 do that now.