Policy
Enable file screens
This policy setting enables administrators to block certain file types from being created in the folders that have been made available offline. If you enable this policy setting, a user will be unable to create files with the specified file extensions in any of the folders that have been made available offline. If you disable or do not configure this policy setting, a user can create a file of any type in the folders that have been made available offline.
211470cf1dcb Pol_ExclusionListSettings Registry
Copy registry mappings
HKLM\Software\Policies\Microsoft\Windows\NetCache\ExcludedFileTypes Policy notes
This policy setting enables administrators to block certain file types from being created in the folders that have been made available offline. If you enable this policy setting, a user will be unable to create files with the specified file extensions in any of the folders that have been made available offline. If you disable or do not configure this policy setting, a user can create a file of any type in the folders that have been made available offline.