了解如何从 Windows 10 家庭版升级到 Windows 10 专业版或从 Windows 11 家庭版升级到 Windows 11 专业版，包括如何使用有效产品密钥或 Microsoft Store。

Learn how to find your old files after upgrading your PC to Windows 10, including search and recovery tips.

Starting a Microsoft Office for Windows application in Office Safe Mode can allow you to safely use it when it has encountered certain problems.

Learn how Windows can help fix desktop apps that appear blurry on your main display when you're using multiple monitors.

You can use a self-running presentation to run unattended in a booth or kiosk at a trade show or convention, or you can save it as a video and send it to a client.

With the file request feature in OneDrive or Sharepoint, you can choose a folder where others can upload files using a link that you send them.

Equation Editor (Microsoft Equation 3.0) was included in earlier versions of Word, but was removed from all versions in the January 2018 Public Update (PU) and replaced with a new equation editor.

Find answers about Clipchamp in our help center and support articles collection.

Learn what to do if you receive a message in Mail or Calendar for Windows 10 that your account settings are out of date.

If you're having trouble detaching or attaching your Surface Book keyboard, here are some steps to try to get things working again.