Choose this option if you want to give specific individuals and groups permission to a file or folder. This lets you remove permission for specific individuals and groups later if you need to. Another benefit of sharing a file and folder this way is that when the recipients view their SkyDrive , the file or folder will appear in the list of files shared with them. On the Send email tab, add the email addresses, contact names, or a group you want to share with. Add an optional message. If you want recipients to be able to sign in with a Microsoft account and edit the file or folder, select Recipients can edit . The people who edit a file or folder will be displayed under Sharing in the details view of the file or folder. If you want recipients to sign in with a Microsoft account before they can view the file or folder, select Require everyone who accesses this to sign in . This also helps prevent other people who could be forwarded the email from being able to access your file or folder. Click Share to save the permission settings and send the email with the link. Note You can send a link to people without knowing their Microsoft accounts, even if they'll need to sign in to view or edit what you shared. You can use any email addresses you have for people when you send them the link. If you share a file or folder