If your organization is using multi-factor authentication (MFA) for Microsoft 365, the easiest verification method to use is the Microsoft Authenticator smart phone app.

Learn how to use the percentage formula in Excel to find the percentage of a total and the percentage of change between two numbers. Try it now!

Get answers to common questions about Notepad. To open Notepad, select the Start button, enter Notepad, then select Notepad from the results. Here are answers to a few common questions about Notepad:

Important: In Excel 2016, Excel Mobile, and Excel for the web, this function has been replaced with the CONCAT function.Although the CONCATENATE function is still available for backward compatibility, you should consider using CONCAT from now on. This is because CONCATENATE may not be available in future versions of Excel.

You can paste the photo into an Office document, an email message, or on your PC's desktop. Learn more about copying and pasting content between your devices (for Surface Duo and select Samsung devices). What are photo notifications? You can get instant access to your most recent photos or screenshots from your linked Android device by engaging with the incoming new photo notifications on your PC.

Note: If you don’t see the Change link, it may be because some information, such as your name, photo, or title, is collected from systems that your IT or human resources department control.If you want to update those details, contact your administrator. If you need help finding your administrator, see How do I find out who my admin is?

What is a security key? We currently support several designs and providers of security keys using the Fast Identity Online (FIDO2) passwordless authentication protocols. These keys allow you to sign in to your work or school account to access your organization's cloud-based resources when on a supported device and web browser.

To install a 64-bit version of Windows, you need a CPU that's capable of running a 64-bit version of Windows. The benefits of using a 64-bit operating system are most apparent when you have a large amount of random access memory (RAM) installed on your computer, typically 4 GB of RAM or more.

To edit a PDF, open it in Word. This works best with PDFs that are mostly text. PDFs of book chapters or something that looks like a manuscript from a copier won't be formatted well in Word.

Learn how to connect to a projector or to another PC in Windows using the keyboard shortcut "Windows logo key + P", the Connect app (for Windows 10), or the Wireless Display app (for Windows 11).