The Desktop Companion is no longer working properly.
Since some days ago, the desktop companion app cannot connect to OneDrive in order to get the list of the folders, and that prevents a fresh installation of the app to work.
The issue is due to some changes to the OneDrive service the app used in order to list the online folders on OneDrive.
If the desktop companion has been installed and configured before the issue appeared, it works properly synchronizing data without issues.
The issue is being investigated to find a solution, in the meanwhile the desktop companion should not be installed since it does not work properly.