The %1 registry value is not configured with default settings. Default Registry Value: HKEY_LOCAL_MACHINE\SYSTEM\Current ...

The %1 registry value is not configured with default settings.

Default Registry Value:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters]
"%1"=dword:0
Configured Registry Value:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters]
"%1"=dword:%2

Guidance:
This event indicates that an administrator has enabled insecure guest logons. An insecure guest logon occurs when a server logs the user on as an unauthenticated guest, typically in response to an authentication failure. Guest logons do not support standard security features such as signing and encryption. As a result, allowing guest logons makes the client vulnerable to man-in-the-middle attacks that can expose sensitive data on the network. Windows disables insecure guest logons by default. Microsoft does not recommend enabling insecure guest logons.