When this option is enabled, Symantec ESM uses both the NT (MD4) hash and the LAN Manager hash to guess passwords. This option increases module run time but can crack passwords that would otherwise not be cracked. In some cases, accounts do not have LAN Manager hashes for their passwords, so their passwords can be cracked only with the more time-consuming NT hash. For example, accounts with passwords longer than 14 characters do not have LAN Manager hashes. This check is currently not supported on Itanium based and 64-bit server systems.