CIFS File enumeration via MMC (Microsoft Management Console) does not list all the open files.
If there are large number of outstanding open files, file enumeration via MMC does not list all the open files.
While responding to the NetFileEnum request, only 256K worth of data is packed into the response and is sent as the final response.
Since the CIFS server is not returning "ERROR_MORE_DATA" and a resume handle to the client,
client is not coming back to enumerate the rest of the files from where it left in it's first iteration.