本文介绍如何在 Windows 8.1、Windows 8、Windows 7 或 Windows Vista 中使用系统文件检查器工具来解决丢失或损坏的系统文件的问题。

Learn how to share Microsoft 365 Family subscription benefits with up to five people. Manage invitations, devices, and people you've shared Office with.

Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.

You can undo, redo, or repeat many actions in Microsoft Word, PowerPoint, and Excel. You can undo changes, even after you have saved, and then save again, as long as you are within the undo limits (By default Office saves the last 100 undoable actions).

Collections in Microsoft Edge helps you keep track of your ideas on the web, whether you're shopping, planning a trip, collecting notes for research or lesson plans, or just want to pick up where you left off the last time you were browsing the internet.

Learn how to enter reading mode in Microsoft Edge and use Immersive Reader to hear webpages and PDFs read out loud.

How to use the SUMIF function in Excel to add the values in a range that meet criteria that you specify.

To zip (compress) files. In the search box on the taskbar, type file explorer, and then select it from the list of results.Right-click the file you want to zip, and then select Send to > Compressed (zipped) folder.. To decompress files. Open File Explorer and find the compressed folder.

Microsoft Edge offers two optional browsing modes—Balanced and Strict—for enhanced security to provide you with an extra layer of protection when browsing the web and unfamiliar sites.

Here are some solutions to common problems with the new Microsoft Edge . If Microsoft Edge keeps crashing. If you can't open Microsoft Edge, or if it opens briefly and then closes, or if you’re unable to open specific webpages, here are some things you can try.