Alternatively, to enable unencrypted (plain text) passwords for the SMB client on Windows NT 4.0 Service Pack 3 and newer systems, modify the registry in the following way: WARNING: Enabling this will allow unencrypted (plain text) passwords to be sent across the network when authenticating to an SMB server that requests this option. This can lessen the overall security of an environment and should only be done after careful consideration of the consequences of plain text passwords in your specific environment. WARNING: Using the registry editor incorrectly can cause serious, system- wide problems that may require you to reinstall Windows NT. Microsoft cannot guarantee that any problems resulting from the use of the registry editor can be solved. Use this tool at your own risk. Run Registry Editor (Regedt32.exe).