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.

There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled. You can try to repair a program first, if it's just not running correctly.

Restoring files from previous versions. Learn how to recover files that have been lost, deleted, or accidentally changed.

Manage email accounts in Outlook.com. Unblock my Outlook.com account. Supported browsers for Outlook on the web and Outlook.com. If you sign in with a work or school account, read How to sign in to Outlook on the web.

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.

To open a PDF file without converting it to a Word document, open the file directly wherever it's stored (for example, double-click the PDF file in your Documents folder). However, if you want to edit the PDF file, go ahead and open it in Word.

Click a PDF in your OneDrive or team site library, and you might notice that it opens automatically in your browser’s built-in PDF reader. You can use this PDF reader to view your PDF, with no need for an additional viewer application on your computer.

To convert a PDF and edit it in Word, check out Edit PDF content in Word. Or use a third-party PDF converter tool to import your PDF into an Office file format, make your changes, and then save the file in PDF format again. You can purchase a PDF converter through the Office Store.

An app for scanning files, such as Windows Scan, available for free from Microsoft Store. The Windows Scan app can help you scan pictures or documents and save them to your PC as JPEG, bitmap, or PNG files. For more info, see Install and use a scanner in Windows. Get Windows Scan.

The Open tab on the File menu shows a list of files you’ve recently opened, and it includes links to places where you commonly store files.