Hello, i have configured L2TP dial on demand connection on Windows 2003R2. But when i try to connect it fails with message "A connection to the remote computer could not be established. You might need to change the network settings for this connection". This is what i found in trace log file("C:\WINDOWS\tracing\RASIPCP.LOG"): [1852] 01-06 05:16:17:010: IPCP: IpcpBegin [1852] 01-06 05:16:17:010: IPCP: VJ disabled for VPN [1852] 01-06 05:16:17:010: IPCP: Compress capabilities: s=$0,0,0 r=$0,15,1 [1852] 01-06 05:16:17:010: IPCP: Server address lookup... [1852] 01-06 05:16:17:010: IPCP: RasSrvrQueryServerAddresses... [1852] 01-06 05:16:17:010: IPCP: RasSrvrQueryServerAddresses done(52) [1852] 01-06 05:16:17:010: IPCP: IpcpMakeConfigRequest [1852] 01-06 05:16:17:010: IPCP: Deferred IpcpBegin error=52 [1852] 01-06 05:16:17:010: IPCP: IpcpProjectionNotification [1852] 01-06 05:16:17:463: IPCP: IpcpEnd... [1852] 01-06 05:16:17:463: IPCP: IpcpThisLayerFinished... Anyone know what this error code means --> "RasSrvrQueryServerAddresses done(52)"

Hi, Thanks for posting here. Could you discuss in detail that how you set this L2TP VPN service in your environment ? Meanwhile , could you check if it works with modify registry value EnableIn where under path “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\RemoteAccess\Parameters\Ip” to 1 Thanks. Tiger LiPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

hi Tiger Li, i thought enbleIn is applicable for RasSrvrQueryServerAddresses done(22) and does it also applicable for RasSrvrQueryServerAddresses done(52) ?

I have checked EnableIn parameter, it is set to 1. Environment: VPN client: Windows 2003 R2 Datacenter edition. I didn't instaled this OS myself and i can't reinstall it. VPN server(s): I have two VPN servers, same result with both. Windows 2008 RRAS Linux xl2tpd/PPPD Client and server addresses are internal (10.0.0.0/8), there is no NAT between them. I have ipSec disabled for L2TP connetions. I have a test client with Windows 2003 R2 Standard, it has clean windows and works fine with both VPN servers. http://support.microsoft.com/kb/240262 <-- how to disable ipSec for L2TP connections.