PC Health Check app brings you up to date info on your Windows device health, helping you take action to improve your device performance and troubleshoot performance problems. It is periodically updated based on customer feedback to help you make the most of your Windows PC.

Internet Explorer 11 支援已終止 Internet Explorer 11 的支援已於 2022 年 6 月 15 日終止。 如果你造訪的任何網站需要 Internet Explorer，可以在 Microsoft Edge 中以 Internet Explorer 模式 重新載入。

Get help with Outlook for Windows, the Outlook app, Outlook.com, and more. Find training videos, how-to articles, and Outlook support content

前往MSN新聞 如何在 MSN 新聞中追蹤出版商 要追蹤新聞出版商，你可以選擇： 從左側窗格選擇 瀏覽所有出版商 ，搜尋你的新聞提供者或出版商，然後選擇 。 選擇出現在你動態消息中的出版社名稱，然後選擇 + 追蹤。 如何在 MSN 新聞中封鎖出版商 要追蹤新聞出版商： 選擇動態中新聞項目旁的 ...

Learn how to install, reinstall, or activate Microsoft 365 or Office 2024 on a PC or Mac.

If your purchase of Office or Microsoft 365 came with a product key, you enter your product key on one of the websites listed below for your product. After you enter your key, you can download and install Office, or you can renew your Microsoft 365 subscription. Having problems with your product key?

Learn how to renew your Microsoft 365 Family or Microsoft 365 Personal subscription online or from a retail store.

取得變更 Microsoft Edge、Internet Explorer 11、Google Chrome、Firefox 和 Safari 的首頁的步驟。

如果這是您想要求的功能，請將您的意見反應傳送給我們，協助我們決定要優先提供哪些新功能。 如需詳細資訊，請參閱 如何提供有關 Microsoft 365 的意見反應。

Learn how to create a OneDrive backup on your PC. Set up OneDrive PC folder backup to access, manage, stop, or fix problems with PC folder backup.