安装 Windows 11 的方法 - Microsoft 支持
重要: 在选择从媒体启动之前，应验证设备是否满足最低系统要求，因为满足后才允许安装 Windows 11，如果你至少具有 TPM 1.2（而不是最低系统要求的 TPM 2.0），它将不会根据处理器的系列和模型验证处理器是否在批准的 CPU 列表上。
KB5005463—PC Health Check Application - Microsoft Support
If you don't receive this automatically, go to Settings > Update & Security > Windows Update. Select Check for updates. Windows Update for Business. No. See the other options. Microsoft Update Catalog. No. See the other options. Windows Server Update Services (WSUS) No. See the other options.
Open Device Manager - Microsoft Support
In the search box on the taskbar, type device manager, then select Device Manager from the menu.
Fix your Outlook email connection by repairing your profile
On the Email tab, choose your account (profile), and then choose Repair.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Office for business, Office 365 Small Business, Microsoft 365 admin
Using IF with AND, OR, and NOT functions in Excel
Examples. Following are examples of some common nested IF(AND()), IF(OR()) and IF(NOT()) statements in Excel. The AND and OR functions can support up to 255 individual conditions, but it’s not good practice to use more than a few because complex, nested formulas can get very difficult to build, test and maintain.
Applies To:
Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel Web App, Excel for Windows Phone 10
OneDrive をオフにするか、無効にするか、アンインストールする
OneDrive は、一部の Windows のバージョンに組み込まれており、アンインストールすることができません。 ただし、同期処理を停止して、表示しないようにすることはできます。
Applies To:
OneDrive for Business, SharePoint Server Subscription Edition, SharePoint Server 2019, SharePoint in Microsoft 365, Office for business, Microsoft 365 admin, OneDrive (work or school), Office.com, OneDrive (home or personal), OneDrive (work or school) operated by 21Vianet, OneDrive for Mac, OneDrive for Windows, SharePoint admin center, SharePoint in Microsoft 365 Small Business, SharePoint operated by 21Vianet
Add and request read receipts and delivery notifications in Outlook ...
In Outlook, the message recipient can decline to send read receipts. There are other scenarios where read receipts are not sent, such as if the recipient's email program doesn’t support read receipts. There is no way to force a recipient to send a read receipt. Select a tab option below for the version of Outlook you're using.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook on the web, Outlook.com, New Outlook for Windows, Outlook on the web for Exchange Server 2016, Outlook on the web for Exchange Server 2019
Get help with your Microsoft account - Microsoft Support
Billing & payments. Your dashboard is also where you can: Buy, renew, or cancel a subscription.
Applies To:
Microsoft account dashboard
Comment se connecter et se déconnecter d’Outlook.com
Pour obtenir de l’aide dans Outlook.com, cliquez ici ou sélectionnez Aide dans la barre de menus et entrez votre requête. Si l'auto-assistance ne résout pas votre problème, faites défiler la page jusqu'à la rubrique Avez-vous toujours besoin d'aide ? et sélectionnez Oui.. Pour nous contacter dans Outlook.com, vous devez vous connecter.
Applies To:
Outlook.com
Troubleshoot problems updating Windows - Microsoft Support
Important: Before trying any of the solutions below, make sure you back up your personal files. You can back up your Windows PC, or insert a USB drive and use File Explorer to drag and copy important files to the USB drive.If you’re signing into Windows with a Microsoft account, your system settings will be automatically restored after updating, once you’re connected to the internet.