Allow users to open files using the DirectInvoke protocol

Allow users to open files using the DirectInvoke protocol. The DirectInvoke protocol allows websites to request that the browser open files from a specific URL using a specific file handler on the user's computer or device. If you enable or don't configure this policy, users can open files using the DirectInvoke protocol. If you disable this policy, users can't open files using the DirectInvoke protocol. Instead, the file is saved to the file system. Note: Disabling DirectInvoke can prevent certain Microsoft SharePoint Online features from working as expected. For more information about DirectInvoke, see https://go.microsoft.com/fwlink/?linkid=2103872 and https://go.microsoft.com/fwlink/?linkid=2099871.