本文介绍如何解决在 Windows 计算机上使用 Windows Installer 安装、卸载或升级程序时出现的问题。

An upgrade moves your PC from a previous version of Windows—such as Windows 7 or Windows 8.1—to Windows 10. An upgrade can take place on your existing device, though Microsoft recommends using Windows 10 on a new PC to take advantage of the latest features and security improvements.

本文介绍 Microsoft Excel 中 FIND 和 FINDB 函数的公式语法和用法。. 说明. 函数 FIND 和 FINDB 用于在第二个文本串中定位第一个文本串，并返回第一个文本串的起始位置的值，该值从第二个文本串的第一个字符算起。

Use Spreadsheet Compare to compare two workbooks to see the differences between them, line by line. You can see how values, formulas, and formatting differ – line by line, and cell by cell.

Learn how to open and run DxDiag.exe on Windows to collect device information and troubleshoot DirectX sound and video issues.

2. Get your information ready. Collect as much information as you can about any Microsoft services you may have used with this account. The more information you can include when filling out the form, the better the chance you’ll have of regaining access to your account.

To do this. Press. Move to the Tell me or Search field on the ribbon and type a search term for assistance or Help content.. Alt+Q, then enter the search term. Open the File menu.. Alt+F. Open the Home tab and format text and numbers and use the Find tool.. Alt+H. Open the Insert tab and insert PivotTables, charts, add-ins, Sparklines, pictures, shapes, headers, or text boxes.

Battery Life: Lowering your refresh rate can save battery power by reducing the amount of energy your display consumes.This can be useful when you are using a laptop or tablet and want to extend your battery life.

With version history, you can see and restore older versions of your files stored in OneDrive or SharePoint. Version history works with all file types, including Microsoft 365 files, PDFs, CAD files, photos, videos, and more.

Access, download, or run the Surface app and the Surface Diagnostic Toolkit to help find and solve Surface problems.