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.

If you set up your list source as an Excel table, then all you need to do is add or remove items from the list, and Excel will automatically update any associated drop-downs for you. To add an item, go to the end of the list and type the new item. To remove an item, press Delete.

You can download free, pre-built document templates with useful and creative themes from Office when you click File > New in your Office app. Templates can include calendars, business cards, letters, cards, brochures, newsletters, resumes, cover letters , presentations, social media and much more.

If you try to install and activate these versions of Office on a different computer (owned by you or someone else), or on the same computer after a hardware change, you might see an error message that says you've reached the maximum number of activations.

You can create a signature for your email messages using a readily available signature gallery template. All you have to do is get the template, copy the signature you like into your email message and personalize it to make your own Outlook signature. Check out the video to see how it's done.

You can convert the table to a range first, or you can use the TRANSPOSE function to rotate the rows and columns. Here’s how to do it: Select the range of data you want to rearrange, including any row or column labels, and press Ctrl+C.

Help with a work or school account password. I need to talk to a customer support agent. Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.

In Word and Outlook, you can use accent marks (or diacritical marks) in a document, such as an acute accent, cedilla, circumflex, diaeresis or umlaut, grave accent, or tilde. For keyboard shortcuts in which you press two or more keys simultaneously, the keys to press are separated by a plus sign (+) in the tables.

Give your PC a Fresh Start. Resetting your PC lets you perform a clean reinstallation and update of Windows while keeping your personal data and most Windows settings intact. In some cases, a clean installation may improve your device's performance, security, browsing experience, and battery life.

Create a booklet using a Word template. Booklet: Page numbering tips. Create different headers or footers for odd and even pages. Get free Microsoft publishing templates. Use Word to create and print a booklet, brochure, or book from your document. Learn the adjustments and layout settings for booklet printing in Word.