OneDrive help & learning
Explore OneDrive support, help, and learning resources. Learn how to protect your important files, documents, and memories with OneDrive.
Storage Spaces in Windows - Microsoft Support
Learn how to create new storage spaces, choose between mirror, two-way, and parity spaces, optimize drive usage, and remove a drive from a pool.
Keep your PC up to date - Microsoft Support
Learn how to automatically or manually install the latest Windows updates to access the latest features and improvements.
Change your screen resolution in Windows - Microsoft Support
Learn how to improve the clarity of text and images displayed on your screen by changing the screen resolution of your monitor.
Protect my PC from viruses - Microsoft Support
Learn how to protect your Windows devices and personal data from viruses, malware, or malicious attacks.
Install and set up Office on an iPhone or iPad - Microsoft Support
How to install Office for iOS on your iPhone or iPad and use the apps with Microsoft 365.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, OneNote for Microsoft 365, Excel for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, Outlook for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, OneNote for Microsoft 365 for Mac, Excel for the web, OneNote for the web, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Office 2021, OneNote 2021, Excel 2021 for Mac, Word 2021 for Mac, Outlook 2021 for Mac, PowerPoint 2021 for Mac, OneNote 2021 for Mac, Office 2021 for Mac, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Office 2019, Excel 2019 for Mac, Word 2019 for Mac, Outlook 2019 for Mac, PowerPoint 2019 for Mac, OneNote 2019 for Mac, Office 2019 for Mac, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, OneNote 2016, Office 2016, PowerPoint 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 - Small Business Admin, Office 365 operated by 21Vianet - Admin, Office app for iOS, Outlook Web App, Skype for Business for iPad
Turn new message alert pop-up on or off - Microsoft Support
See an alert in a pop-up window on the bottom of Windows desktop when new email messages arrive in your Outlook Inbox.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, New Outlook for Windows
March 26, 2024—KB5035942 (OS Builds 22621.3374 and 22631.3374) Preview
Windows 11, version 22H2; July 25, 2024—KB5040527 (OS Builds 22621.3958 and 22631.3958) Preview; July 9, 2024—KB5040442 (OS Builds 22621.3880 and 22631.3880)
Share and access another person's mailbox or folder in Outlook
If you have the required permissions, you can access another user's mailbox using Outlook. This feature is only available to work or school accounts using Microsoft 365 or Exchange Online.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook Web App for Office 365, Outlook Web App for Office 365 Small Business, Outlook on the web, New Outlook for Windows, Outlook Web App
What happens if there's an unusual sign-in to your account
Learn why you received a notification about unusual activity in your account and what to do next.