Learn how to find and install digital downloads from Microsoft Store. See instructions to download and install software directly purchased from Microsoft.

Learn why it's important to have a backup, and how Windows Backup can help you keep your files and settings safe.

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Learn what you can do if you're not receiving account aign-in verification codes.

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。

With Microsoft Edge, you can turn on sync to browse the web on all your devices, keep your favorites organized, and more.

Learn how to reinstall Windows on your PC and how activation works after it's installed.

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

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Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.