In your assets library, at the top of the window, click the Library tab.
On the ribbon, in the Connect & Export group, click the Connect To Office button.
In the pop-up message box that appears, click the Yes Button.
Connect your asset library to Office.
If you are using an Office 365 instance of SharePoint, you will also need to connect to the service from within Office.
Open an Office application, such as Microsoft Word 2013, Microsoft PowerPoint 2013, or Microsoft Excel 2013.
Click the File tab to display the Backstage view.
Click the Account tab.
Click Add A Service.
On the menu that opens, point to the Storage option.
On the submenu that appears, click Office 365 SharePoint.
In the Sign In To Office dialog box, click the Sign In Button.
Enter your User ID and Password and then click Sign In.
When using Office 365, it can take up to several hours before the Office 365 sites become available for you within Office applications.