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Download and install or reinstall Office 2019, Office 2016, or Office ...
From the Overview page, select Office apps and on that page, find the Microsoft 365 product you want to install and select Install. To install Microsoft 365 in a different language, or to install the 64-bit version, use the dropdown to find more options.
Applies To: Office 2019, Office 2016, Office 2016 for Mac, Office 2013
Reduce the size of pictures and attachments in Outlook email messages
If you're concerned about the size of your email messages or if you've received a message that your email is too large to send, there are several steps you can take to reduce the size of the attached pictures and other documents.
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, New Outlook for Windows
Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
For Microsoft 365 operated by 21 Vianet go to login.partner.microsoftonline.cn. For Microsoft 365 Germany go to portal.office.de. This completes the download of Microsoft 365 to your device. To complete the installation, follow the prompts in the "Install Microsoft 365" section below.
Applies To: Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, 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
Upload photos and files to OneDrive - Microsoft Support
You can upload files to OneDrive using the OneDrive mobile app for Android, iOS, or Windows Phone. To learn how, see: Upload files or photos to OneDrive in Android. Upload files or photos to OneDrive in iOS.
Applies To: OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows
Activate Windows - Microsoft Support
Learn how to activate Windows using a product key or digital license, check your activation status, and link your Microsoft account.
Windows Update: FAQ - Microsoft Support
Fix Bluetooth problems in Windows. Learn how to get the latest Windows updates. Find answers to FAQ about updating Windows to keep your PC up to date.