When running the Network Discover file system scans they continuously fail with access denied.
Message: Access is denied.
Note: See the Filereader log for specific user information
Improper privileges to protect user.
From DLP 15.x the protect user is also validated before a scan starts. In prior versions on the scan user were the only credentials validated before the scan starts.
See the following for more detail:
Added privileges for the user specified on the protect tab.