Sign in with Microsoft
Sign in or create an account.
Hello,
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.
Unlicensed Product and activation errors in Office
If Office activation fails, you'll see Unlicensed Product or Non-commercial use / Unlicensed Product in the title bar of your Office apps, and most features of Office are disabled. To restore all features of Office, you'll need to fix the problem that's causing activation to fail.
Applies To: Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Project Online Desktop Client, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, InfoPath 2013
Using email in Outlook on the web - Microsoft Support
Get help with signing in, changing passwords, creating and sending mail, deleting mail, creating folders, and more in Outlook on the web.
Applies To: Outlook.com, Outlook on the web for Exchange Server 2016
Send and receive text messages from your PC - Microsoft Support
You can't manage or delete messages on your PC. Send a new text message. Open Phone Link and select the Messages tab. Click on New Message to start a new conversation with any of your contacts. Enter the name or phone number of your contact to look up someone in your list.
更改屏幕亮度(Windows - Microsoft 支持
选择 任务栏 右侧"网络"图标,然后移动"亮度 "滑块以 调整亮度。(如果未显示滑块,请参阅下方的“备注”部分。) 某些电脑可能允许 Windows 根据当前照明条件自动调整屏幕亮度。
Phone Link help & learning
Find help and support content for Microsoft Phone Link. Learn time-saving tips and explore how you can use Phone Link to stay productive.
Burn and rip CDs - Microsoft Support
Learn how to rip (copy) and burn (create) CDs and data DVDs using Windows Media Player.
Get new themes and desktop backgrounds - Microsoft Support
Select Start , then select Settings > Personalization > Themes.Choose from a default theme or select Get more themes in Microsoft Store if you want to download new themes with desktop backgrounds that feature cute critters, breathtaking landscapes, and other smile-inducing options.
Connect to a Wi-Fi network in Windows - Microsoft Support
Learn how to connect to a Wi-fi network in Windows and manage your current network connections.
Windows メディア プレーヤー エラーのトラブルシューティング - Microsoft サポート
Windows Media Player のエラーをトラブルシューティングする方法について説明します。 Windows Media Player の一般的なヘルプについては、リソースを参照してください。
如何将我的 Xbox 控制器连接到电脑? | Xbox Support
可以通过使用 USB 电缆、适用于 Windows 的 Xbox 无线适配器或蓝牙将控制器连接到 Windows 设备。 有些 Windows 设备还附带了 Xbox 无线功能,因此无需适配器即可直接连接控制器。