1 If your browser window is narrow and you don't see OneDrive on the toolbar, click the three dots icon to see the options that didn't fit on the toolbar. 2  Click sync. 3  In the dialog box that opens, click Get the OneDrive for Business app that's right for me.4  A Software page will open with OneDrive selected on the left. In the blue Office 365 toolbar, click OneDrive. 2  If your browser window is narrow and you don't see OneDrive on the toolbar, click the three dots icon to see the options that didn't fit on the toolbar. 3  Click sync.