Fix Wi-Fi connection issues in Windows - Microsoft Support
Right click the network icon in the right side of the taskbar and select Diagnose network problems or open Get Help for Network & Internet. Make sure Wi‑Fi is turned on. Select the No internet icon on the right side of the taskbar, and make sure Wi-Fi is turned on. If it isn't, select it to turn it on. Also, make sure Airplane mode is turned off.
Create installation media for Windows - Microsoft Support
To create installation media, go to the software download website, where you'll find step-by-step instructions. On that website, you can select a version of Windows and create your own installation media using either a USB flash drive or a DVD. To go directly to one of the versions, select one of these links: Windows 10 (Then select Download now.)
Contact Us - Microsoft Support
Open a service request in the Microsoft 365 admin center. This service is free. Get help and support, whether you're shopping now or need help with a past purchase. Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.
Finding your BitLocker recovery key in Windows - Microsoft Support
In a work or school account: If your device was ever signed into an organization using a work or school email account, your recovery key may be stored in that organization's Azure AD account. You may be able to access it directly or you may need to contact the IT support for that organization to access your recovery key.
Redeem a gift card or code to your Microsoft account
How to redeem a gift card, Xbox download code or token. Both Microsoft and Xbox gift cards and download codes and tokens work the same way: once redeemed to your Microsoft account, you can spend your balance at Microsoft Store online, on Windows or Xbox, and you can get downloads for the latest apps, games, movies, TV shows, and Surface, Xbox, and accessories.
Applies To:
Microsoft account dashboard
修复 Windows 中的蓝牙问题 - Microsoft 支持
检查蓝牙设备. 确保蓝牙设备已打开、已充电或具有新电池，并且位于电脑的连接范围内。. 然后尝试执行以下操作：. 关闭你的蓝牙设备，等待几秒钟，然后将其重新打开。. 确保你的蓝牙设备位于有效范围内。. 如果你的蓝牙设备无响应或响应迟缓，请检查以 ...
Office 中的产品帮助在哪里？ - Microsoft 支持
下面是操作方法：. 选择“文件”>“选项”>“快速访问工具栏”。. 在显示“从中选择命令”的下拉列表中，选择“所有命令”。. 从要添加到快速访问工具栏的命令的列表中选择“帮助”。. 单击“ 添加 ”。. 完成后，单击“确定”。. 帮助快捷键将添加到左上 ...
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, Project Online Desktop Client, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Visio Professional 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Visio Professional 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, Project Professional 2016, Project Standard 2016, Visio Professional 2016
Fix sound or audio problems in Windows - Microsoft Support
If the Get Help app is unable to resolve your sound or audio issue, try the possible solutions listed: 1. Check your speaker output. 2. Run the audio troubleshooter. 3. Verify that all Windows Updates are installed. 4. Check your cables, plugs, jacks, volume, speaker, and headphone connections.
取消 Microsoft 订阅 - Microsoft 支持
注意: 如果看到了打开定期计费，而不是显示“管理”的链接，这意味着你的订阅已设置为在显示的日期到期，且在此日期之后不会自动扣费。目前没有进一步的操作，你可以继续使用该产品，直到订阅过期。
Applies To:
Microsoft account dashboard
2023 年 4 月 11 日 - KB5025288 (仅限安全的更新) - Microsoft 支持
提醒 Windows 8.1 于 2023 年 1 月 10 日终止支持，不再提供技术协助和软件更新。 如果你的设备运行 Windows 8.1，建议将它们升级到更新的、正在使用的和受支持的 Windows 版本。 如果设备不符合运行更新版本 Windows 的技术要求，建议将其替换为支持 Windows 11 的设备。