Offine Files - Remove prompt about excluded files error
You may get an error such as this popup during a offline files sync…
Offline files (\\server\share on server): Unable to make ‘archive.pst’ available offline on \\server\share\folder. Files of this type cannot be made available offline.
Microsoft have said that even if the file is in the excluded list then by design offline files will still complain about it when it tries to sync.
There is a way to remove the warning prompt for specific files; (you may need to update your machine to the latest support pack in some cases)