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A Print Nightmare Artifact - krbtgt/NT Authority

jessev's avatar
jessev
Icon for Microsoft rankMicrosoft
Mar 02, 2023
Hello! This is Jessev from the Directory Services team with some advice on how to deal with an annoyance created by the print spooler service. We, on the Direcory Service team, tend to see this issue...
Updated Mar 03, 2023
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jessev's avatar
jessev
Icon for Microsoft rankMicrosoft
Jan 26, 2024

Hi trytogetitdone,

 

Playing with the policy, and looking in the registry, we can glean some meaning of 0x0, 0x1 and 0x2 for RpcAuthentication for Win11. As far as I know, this is the same thing as RpcNamedPipeAuthentication for Win10 and below.

 

For Win11 the policy named "Configure RPC Connection Settings" (Computer Config, Admin Templates, Printers) controls both RpcAuthentication and RpcUseNamedPipeProtocol. In the Policy GUI, the second drop down labeled "use Authentication for outgoing RPC Connections" controls RpcAuthentication. The three possible values are "Default (0x0)", "Authentication Enabled (0x1)" and "Authentication Disabled (0x2)"

 

For RpcUseNamedPipeProtocol, 0x0 means "RPC over TCP" 0x1 is, "RPC over Named Pipes".

 

This article has some more information which may be of use:
RPC connection updates for print in Windows 11

https://learn.microsoft.com/en-us/troubleshoot/windows-client/printing/windows-11-rpc-connection-updates-for-print