Download and install apps - Microsoft Support
Learn how to download and install apps you need from your Microsoft 365 business subscription.
Use the Office offline installer - Microsoft Support
To help with issues you might encounter when installing Microsoft 365 because of slow speeds or unreliable connections, follow the steps below that are specific to your plan. You need to be connected to the internet to download this installer file, but once that's done, you can then install Microsoft 365 offline on a PC at your convenience.
Applies To:
Office 2024, Office 2021, Office 2019, Office 2016, Microsoft 365 for home, Microsoft365.com, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Install Project - Microsoft Support
Before installing Project the first time, sign in with an existing or new Microsoft Account and enter your product key* at microsoft365.com/setup. Redeeming your key links your account with the Project app and you only have to do this once.
Applies To:
Project Online Desktop Client, Project Professional 2024, Project Standard 2024, Project Professional 2021, Project Standard 2021, Project Professional 2019, Project Standard 2019, Project Professional 2016, Project Standard 2016, Microsoft365.com, Office for business, Office 365 Small Business, Microsoft 365 admin, Project for Office 365
How to install programs from online sources on Windows
You should download and install programs only from trusted publishers and retail websites. In your web browser, select the link to the program. Select Save or Save as to download the program. Most antivirus programs like Windows Defender will scan the program for viruses during download.
Download, install, or reinstall Microsoft 365 or Office 2024 on a PC or ...
From the Install apps window select the language and version you want (64 or 32-bit), and then select Install. (See Install Visio or Install Project if you need to reinstall those stand-alone apps.) This completes the download of Microsoft 365 to your device.
Applies To:
Office 2024, Office 2024 for Mac, Microsoft 365 for home, Microsoft365.com, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Windows Installer 4.5 is available - Microsoft Support
Microsoft Windows Installer is a component of the Windows operating system. Windows Installer provides a standard foundation for installing and uninstalling software. Software manufacturers can create the setup of their products to use Windows Installer to help make software installation, maintenance, and uninstallation straightforward and easy.
Download and install or reinstall Office 2021, Office 2019, or Office ...
Download and install or reinstall Office 2021, Office 2019, or Office 2016. Important: Support for Office 2016 and Office 2019 will end on October 14, 2025 and there will be no extension and no extended security updates. All of your Office 2016 and Office 2019 apps will continue to function.
Applies To:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Office 2016, Office 2016 for Mac
Create installation media for Windows - Microsoft Support
Go to the Download Windows 10 site. Under Create Windows 10 Installation Media, select Download Now. The MediaCreationTool.exe tool is downloaded. Run MediaCreationTool.exe. The media creation tool walks through creating installation media. Important: Back up your files before you install or reinstall Windows on your PC. Learn how.
Automatic file download notifications in Windows
Learn how to manage automatic file downloads from your Windows apps when you use an online storage provider, such as OneDrive Files On-Demand.
Find and install your Microsoft downloads from Microsoft Store
Learn how to find and install digital downloads from Microsoft Store. See instructions to download and install software directly purchased from Microsoft.
Applies To:
Microsoft account dashboard