Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.

Get info on how to find your IP address in Windows. Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled.

After launching an Office app, you might receive a message that says Get genuine Office.. If you see this, we've determined that the Office product installed on your device isn't legitimate and you may be a victim of software counterfeiting.

How to stop website notifications in Microsoft Edge. You can remove or block notifications for individual websites in the following ways: Remove or block notifications in Edge settings

Microsoft's products and services work best if you use the same language and region across all your devices, and in all of your app and Store settings.

在 Excel 中，IF 函数允许通过测试某个条件并返回结果（如果该条件为 True 或 False），在值和预期值之间进行逻辑比较。

An overview of location permissions and your privacy in the Microsoft Edge web browser.

了解如何使用 Windows 上的 Game Bar 来捕获游戏过程、与好友聊天和跟踪成就。