Important: Before trying any of the solutions below, make sure you back up your personal files. You can back up your Windows PC, or insert a USB drive and use File Explorer to drag and copy important files to the USB drive.If you’re signing into Windows with a Microsoft account, your system settings will be automatically restored after updating, once you’re connected to the internet.

We’re continually releasing updates to our application, based on customer feedback. Check out What's New in the latest updates for Skype on desktop and mobile.

How to find and remove duplicates in Excel. Filter for unique values in large or small datasets to clean up your worksheets and workbooks.

Create, edit and share documents with Microsoft Word online. Learn how to use Word for the web to create, open, and rename documents with ease.

Here's how to show icons, hide them, or change their size in Windows. To show or hide desktop icons. Right-click (or press and hold) the desktop, point to View, and then select Show desktop icons to add or clear the check mark.

Alternate command key. What it does. Help. Opens the Help system (if any) for the active window. Undo. Cancels the previous action. Redo. Cancels the previous Undo action.

Notes: Meeting recordings won't capture whiteboards, annotations, shared notes or content shared in the stage view by apps, and also won't include videos or animations embedded in PowerPoint Live presentations.

Disk Management in Windows helps you perform advanced storage tasks like initializing a new drive and extending or shrinking volumes.

Make the everyday easier with Windows 11. When there's a lot to do, Windows 11 helps you get it done. With intuitive navigation and new multitasking tools, it brings you the performance you want and the security you need.

获取 Windows 操作系统的官方支持和帮助信息，以及如何使用 Windows 的指南。