defaultauthlevel

The defaultauthlevel tag covers discussions about the DCOM Default Authentication Level in Windows, a security setting that controls authentication for remote procedure calls (RPC). Threads focus on the registry key HKLM\SOFTWARE\Microsoft\Rpc\SecurityService\DefaultAuthLevel, which can be set to values from 0 to 6 corresponding to levels like None, Call, Connect, Packet, Packet Integrity, and Packet Privacy. Users report issues such as lsass.exe constantly reading this registry key and generating NAME NOT FOUND events in Process Monitor. Workarounds include setting the value to 6 (Packet Privacy) to enforce outbound RPC authentication. The tag is relevant for troubleshooting RPC security and registry behavior in Windows environments.