Why: The url for this file is too long for the application – SharePoint
While working in a SharePoint library, you may receive an error after trying to open or edit document using Internet Explorer.
The URL for this file is too long for the application. A temporary copy of this file will be opened on your computer. You must save this copy as a new file.
Internet Explorer has a hard limit of 255 maximum characters in the URL field. For more information, refer to adjust SharePoint URL field length.