VPN not working in latest image

@bertin is building his own image to include VPN support.

  • VPN support was working in WEC7 V2.2b2.
  • VPN does not work in WEC7 V2.3

Receive the “a network error has occured, or the server has closed the VPN Connection error” message, in a dialog box, upon initial connection

After the initial error message, if we try and redial the vpn connection we just receive an “Opening port” message and nothing else…

188257 PID:400002 TID:445000a Exception 'Raised Exception' (0x6ba): Thread-Id=0445000a(pth=a2888000), Proc-Id=00400002(pprc=86402c10) 'NK.EXE', VM-active=0153002a(pprc=a281f138) 'udevice.exe'
 188258 PID:400002 TID:445000a PC=efe44834(k.coredll.dll+0x00054834) RA=800a16c8(kernel.dll+0x000306c8) SP=b22af0a4, BVA=00000000
 188258 PID:400002 TID:445000a L2TP: (_IPsecPolicySetEx) - * ERROR * OPEN FWP FILTER ENGINE FAILED. STS[23]
 188259 PID:400002 TID:3a10032 L2TP: * NOTICE * Recv WorkItem started
 188260 PID:400002 TID:445000a Unknown: DEBUGCHK failed in file d:\bt\2643\private\winceos\comm\ndismods\wan\l2tpv6\l2tp_ipsec_if.c at line 283 
 188260 PID:400002 TID:445000a DEBUG_BREAK @ef5d9758 Ignored.
 188260 PID:400002 TID:445000a L2TP: * ERROR * SET IPSEC POLICY FAILED. STS[23]
 188262 PID:400002 TID:20a003a PppNdisIssueRequestWorker Status PENDING 259
 188296 PID:400002 TID:6c5008e PPP: -PppNdisDoSyncRequest - Type=0 Oid=OID_TAPI_MAKE_CALL (7030115) Status=c0000001
 188296 PID:400002 TID:6c5008e !NdisTapiLineMakeCall: NdisRequest returned 0xC0000001
 188297 PID:400002 TID:6c5008e PPP: ERROR from NdisTapiLineMakeCall c0000001
 188300 PID:65f007a TID:667007a RASCS_Disconnected: Ecode=619
 188318 PID:400002 TID:667007a PPP: +PppNdisIssueRequest - Type=1 Oid= (7030103)
 188319 PID:400002 TID:667007a PppNdisIssueRequest Type:1
 188319 PID:400002 TID:667007a PppNdisIssueRequest CALLBACK MODE
 188321 PID:400002 TID:20c003e PppNdisIssueRequestWorker Status PENDING 259

Here is the link about the registry entry that you must delete before you can setup vpn to an l2tp ipsec server behind nat. I am not sure why your windows 10 desktop failed to connect, but it could be similar.


I reverted BSP v 2.2 and OSDesign v2.2. Again I added the VPN catalog items and did a clean sysgen. The VPN didn’t seem to work with v2.2 either. This is using the development board

Since v2.2b2 seemed to work, I will try and add our modem drivers and settings needed to create the image for v2.2 on our instrument and see if the VPN works with the cell modem.

I created an based on your v 2.2 BSP and OSDesign v 2.2 with (Bootloader v2.3, not sure if it is relevant) and have had no success with VPN…so I am assuming that V2.2 VPN is broken as well.

Is there any progress on your end?

vpn not working in 2.3 log

one needs to add the following registry keys for vpn to work in version 2.3 (BSP/OSDesign)





The problem was created by the new BusEnum2.dll (the new bus enumerator driver under the HKLM\Drivers\BuiltIn key) being enabled (to load the drivers asynchronously ) and not having the above info in the registry to indicate the dependencies needed.

Thanks for Germano and Andy for the help.