An unexpected error is keeping you from copying the file. If you continue to receive this error, you can use the error code to search for help with this problem. Error 0x80070057: The parameter is incorrect.Although I have not figured out how to recover the files I found the cause is the policy rule of last_modified > 0 . Instead use. last_modified > 1
Another rule with FMA always test your policy on a test share or directory.