Reset a forgotten Microsoft account password
Notes: If you know your password, but just want to change it, go to account.microsoft.com Security tab, and select Change my password. If you know your username and password but they have stopped working, read My username and password have stopped working.
适用于:
Microsoft 帐户仪表板
Sign in - Microsoft Support
Training: Sign in to office.com with your Microsoft personal, work, or school account. Watch this video to learn how.
适用于:
Office 2021, Office 2019, Office 2016
检查你的 DirectX 版本 - Microsoft 支持
检查你的版本 DirectX 是许多 Windows 游戏都需要的一种多媒体技术套件。 如果你的电脑未安装正确版本的 DirectX（产品包装盒上应标有所需的版本），游戏可能无法正常运行。
Use the web version of Outlook like a desktop app
Use Outlook in the new Microsoft Edge. In Microsoft Edge, sign in to your Outlook on the web or Outlook.com account.
适用于:
适用于 Office 365 的 Outlook Web App, 适用于 Office 365 小型企业版的 Outlook Web App, Outlook 网页版, Outlook.com, 适用于 Exchange Server 2019 的 Outlook 网页版
Baixar e instalar ou reinstalar o Office 2019, o Office 2016 ou o ...
Se esta for a primeira vez que você instala o Microsoft 365, talvez seja necessário seguir algumas etapas de configuração primeiro. Expanda a seção a seguir para saber mais. No entanto, se você está reinstalando o Microsoft 365 e já resgatou uma chave do produto e tem uma conta associada ao Microsoft 365, vá para a seção entrar para baixar o Office.
适用于:
Office 2019, Office 2016, Office 2016 for Mac, Office 2013
Como iniciar sessão no Hotmail - Suporte da Microsoft
Notas: A sua palavra-passe do Hotmail ou Outlook.com é a mesma que a palavra-passe da sua Conta Microsoft. Se conseguir iniciar sessão mas estiver a ter problemas com o Outlook.com, verifique o estado do serviço.Se o estado não estiver verde, aguarde até que o serviço volte ao normal e tente novamente.
适用于:
Outlook.com
Hotmail にサインインする方法 - Microsoft サポート
Hotmail が Outlook.com になりました。 Hotmail アカウントにサインインするには、[ www.outlook.com] に移動し、[サインイン] を選択 します。 ユーザー名またはパスワードを忘れた場合は、 サインインのトラブルシューティング ツールを使用しますが、2 年以上アカウントにサインインしていない場合は ...
适用于:
Outlook.com
Install Office updates - Microsoft Support
On a Mac? See Check for Office for Mac updates automatically.. Click here for the Latest updates for versions of Office that use Windows Installer (MSI).. Choose your version of Office. If you're not sure what version of Office you have, see What version of Office am I using?. Not sure which type of install you have?
适用于:
Microsoft 365 专属 Excel, Microsoft 365 专属 Word, Microsoft 365 专属 Outlook, Microsoft 365 专属 PowerPoint, Microsoft 365 专属 Access, OneNote for Microsoft 365, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project 专业版 2016, Project Standard 2016, Office 2016, Microsoft 365 家庭版, Office 商业版, Office 365 小型企业版, Microsoft 365 管理员, 由世纪互联运营的 Office 365, InfoPath 2013, InfoPath Filler 2013
IF 函数 - 嵌套公式和避免错误 - Microsoft 支持
此类问题很严重，因为在许多情况下，此类错误容易被忽视，直到产生负面影响才会被发现。 既然知道复杂嵌套 IF 语句具有严重缺陷，你能做些什么？ 在大多数情况下，可使用 VLOOKUP 函数，而不是使用 IF 函数构建复杂公式。
适用于:
Microsoft 365 专属 Excel, Microsoft 365 Mac 版专属 Excel, Excel 网页版, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel Web App, Excel for Windows Phone 10
Obtain a digital certificate and create a digital signature
This article explains how you can get or create a digital signature for use in Office documents. To learn more about how to use them in Office documents, see Add or remove a digital signature in Office files.. What is a digital signature?
适用于:
Microsoft 365 专属 Excel, Microsoft 365 专属 Word, Microsoft 365 专属 Outlook, Microsoft 365 专属 PowerPoint, Word 2021, Word 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Office 2016, Excel 2013, Word 2013, Outlook 2013, PowerPoint 2013, Office 2013