Cisco VPN client can't connect: 0x300009B - 0xE30000A7

Unanswered Question
Nov 30th, 2009


All of our clients have Cisco VPN Client installed and generally it works fine.

Since a while we have one particular client which refuses to connect. Please find the logfile attached.

1) Certificate was renewed and synchronised with Active Directory

2) All Active Directory properties have been checked according to the Company Standards

3) Workaround method used:

a) Cisco VPN Client software has been uninstalled

b) All registry entries for Cisco were removed

c) Reboot

d) Latest Cisco VPN Client ( was installed (resolved the same issue on another client, but persists on this client)




Cisco Systems VPN Client Version

Copyright (C) 1998-2009 Cisco Systems, Inc. All Rights Reserved.

Client Type(s): Windows, WinNT

Running on: 5.1.2600 Service Pack 3

Config file directory: C:\Program Files\Cisco Systems\VPN Client\

1      14:09:18.298  11/27/09  Sev=Warning/2    IKE/0xE300009B

Failed to generate signature: Signature generation failed (SigUtil:97)

2      14:09:18.298  11/27/09  Sev=Warning/2    IKE/0xE300009B

Failed to build Signature payload (MsgHandlerMM:489)

3      14:09:18.298  11/27/09  Sev=Warning/2    IKE/0xE300009B

Failed to build MM msg5 (NavigatorMM:312)

4      14:09:18.298  11/27/09  Sev=Warning/2    IKE/0xE30000A7

Unexpected SW error occurred while processing Identity Protection (Main Mode) negotiator:(Navigator:2263)


Could you please assist in analysing our issue and provide technical assistance if possible?

Many thanks in advance

I have this problem too.
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