DATEDIF function - Microsoft Support
Warning: Excel provides the DATEDIF function in order to support older workbooks from Lotus 1-2-3.The DATEDIF function may calculate incorrect results under certain scenarios. Please see the known issues section of this article for further details.
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, SharePoint Foundation 2010, SharePoint Server 2010, Windows SharePoint Services 3.0
Getting started in Outlook Web App - Microsoft Support
Learn how to sign in to Outlook Web App to access your mail, calendar, and contacts information.
Applies To:
Outlook Web App for Office 365, Outlook Web App
How to change your Microsoft account name or address
The display name doesn't change your gamertag. If you want a new gamertag, see How to change your Xbox gamertag.
Applies To:
Microsoft account dashboard
Change how the message list is displayed in Outlook
Choose how you want emails displayed in the message list, such as whether you want emails displayed as individual messages or as conversations.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Office for business, Office 365 Small Business, Microsoft 365 admin, Outlook on the web, Outlook.com, New Outlook for Windows
Install Project - Microsoft Support
See how to install Project 2013 and 2016 and Project Pro for Office 365.
Applies To:
Project Online Desktop Client, Project Professional 2021, Project Standard 2021, Project Professional 2019, Project Standard 2019, Project Professional 2016, Project Standard 2016, Office for business, Office 365 Small Business, Microsoft 365 admin, Project for Office 365
Désinstaller ou supprimer des applications et des programmes dans ...
Désinstallez ou supprimez des applications et des programmes dans l’application Paramètres.
View your PC info - Microsoft Support
Learn how to view your PC information on Windows with Microsoft Support's step-by-step guide.
COUNTIFS function - Microsoft Support
How to use the COUNTIFS function in Excel to apply criteria to cells, across multiple ranges, and count the number of times all criteria are met.
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
OneDrive help & learning
Explore OneDrive support, help, and learning resources. Learn how to protect your important files, documents, and memories with OneDrive.
Virus & threat protection in Windows Security - Microsoft Support
Learn how to use virus and threat protection options in Windows Security to scan your device for threats and view the results.
Applies To:
Microsoft account dashboard