When you delete an item from a SharePoint document library or list, it isn’t immediately removed from SharePoint. Deleted items go into the site Recycle Bin for a period of time.

When someone shares a folder with you, it appears in the Shared section of your OneDrive.com.If you have Edit permissions to those shared folders, you can add them to the My files section of your OneDrive to make them easier to access and work with. If you want to view and access shared folders on your PC or Mac, install the OneDrive app and sync your folders to your device.

Describes some improvements for Windows Store and Windows Update in Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2.

Fixes an issue in which a disk resource does not come online when unauthorized characters are used in the resource name. This issue occurs in a Windows Server 2012 R2 or Windows Server 2008 R2-based failover cluster.

How to lock cells in Excel to protect your data. You can also unlock a range of cells and grant permissions to others to edit.

Get tips to help you find and restore lost or missing files, photos, or folders in OneDrive.

Find support for using mail, calendar, and contacts on Outlook.com with Microsoft's helpful resources.

When you're working as a team—in Microsoft Teams, SharePoint, or Outlook—a shared library allows your team to store and access files that your team members work on together, and OneDrive for work or school connects you to all your shared libraries.

Describes an issue where you experience performance and synchronization problems when you try to access folders in a secondary mailbox in Microsoft Outlook. Provides resolutions.

Learn how to open a shared mailbox in Outlook. Shared mailboxes let a group of users view and send email, and share a calender, and open a contact list from a common mailbox.