When trying to open a file for Edit Online located very deep in folder hierarchy so that full URL to the file exceeds 260 characters, the file fails to open. That's fine and understand the limitation.
In 3.4.6 it was failing silently and in 4.1.3 we observe the attached info message.
The message says: "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."
After clicking OK Web UI reports: "Could not start MS Office"
Is it normal that Share fails to start Office application? The pop-up was implying that office would start.
How to reproduce:
Create a site with a deep folder structure exceeding 260 characters for the URL
Upload an Office document
Edit Online the document
The temp document will open as suggested by the message
A new window pops up saying that Could not start MS Office
See attached images