You will need to disable offline files on the computer. This can be done via GPO or on each individual computer.
To GPO can be found in the following location
Local Computer Policy\Computer Configuration\Administrative Templates\Network\Offline Files
Change the following:
Allow or disallow use of offline files feature: Disabled
Prohibit user config: Enabled
Sync all offline files when logging on: Disabled
Sync all offline files when logging off: Disabled
Sync offline files before suspend: Disabled
Remove ‘Make offline’: Enabled
Prevent use of Offline Files folder: Enabled