Tell us your problem so we can get you the right help and support.

How to calculate the number of days, months, or years between two dates using the DATEIF function in Excel.

Learn how to install the latest version of DirectX to enable games and multimedia applications on your system.

Learn how to use keyboard shortcuts in Word to navigate, select, format, and edit your documents faster and easier.

Learn how to troubleshoot USB-C problems in Windows and fix USB devices, ports, and adapters not working properly.

Defragment your Windows 10 PC. Optimizing your drives can help your PC run smoother and boot up faster.

Choose either portrait (vertical) or landscape (horizontal) orientation for all or part of your document.

To open File Explorer in Windows 10, select its icon on the taskbar, press the Windows logo key + E on your keyboard, or select Start > Documents (directly beneath your user icon).. Here are some things to try if File Explorer won't open.

Learn how to type a letter online using Word for the web. Choose a letter template for online letter writing. Edit, send or print your letter online.

How to add and request read receipts and delivery notifications in Outlook.