Hello, the TAP-Win32 driver v8 with Vista patches cannot be installed, since Vista stops that from happening: - <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> - <System> <Provider Name="Microsoft-Windows-ApplicationExperienceInfrastructure" Guid="{5ec13d8e-4b3f-422e-a7e7-3121a1d90c7a}" /> <EventID>1</EventID> <Version>0</Version> <Level>3</Level> <Task>0</Task> <Opcode>2</Opcode> <Keywords>0x8000000000000000</Keywords> <TimeCreated SystemTime="2007-06-16T15:11:15.088Z" /> <EventRecordID>26168</EventRecordID> <Correlation /> <Execution ProcessID="5364" ThreadID="4840" /> <Channel>Application</Channel> <Computer>STRAWBERRY</Computer> <Security UserID="S-1-5-18" /> </System> - <EventData> <Data Name="DBType">4</Data> <Data Name="AppNameCount">33</Data> <Data Name="AppName">TAP-Win32 Virtual Network Driver</Data> <Data Name="VendorNameCount">20</Data> <Data Name="VendorName">The OpenVPN Project</Data> <Data Name="SummaryCount">282</Data> <Data Name="Summary">(Translated, original German version follows): TAP-Win32 Virtual Network Driver uses one or more drivers which are incompatible with this version of windows. Please contact The OpenVPN Project to obtain an updated version. TAP-Win32 Virtual Network Driver verwendet mehrere Treiber, die bekannte Inkompatibilitäten mit dieser Windows-Version aufweisen. Wenden Sie sich vor der Installation dieser Software an den Softwarehersteller The OpenVPN Project, um eine kompatible Version der Treiber zu erhalten.</Data> <Data Name="SessionID">1</Data> </EventData> </Event> I then downloaded OpenVPN 2.1 Beta 4 which includes TAP-Win32 V9. It installed just fine, however, AICCU cannot find the interface in the registry: d:\Downloads>aiccu-2006-07-23-windows-console.exe start sock_getline() : "200 SixXS TIC Service on noc.sixxs.net ready (http://www.sixxs .net)" sock_printf() : "client TIC/draft-00 AICCU/2006.07.23-console-win32 WinNT/6.0.6 000" sock_getline() : "200 Client Identity accepted" sock_printf() : "get unixtime" sock_getline() : "200 1182007922" sock_printf() : "username AB34-6BONE" sock_getline() : "200 Choose your authentication challenge please" sock_printf() : "challenge md5" sock_getline() : "200 (...)" sock_printf() : "authenticate md5 (...)" sock_getline() : "200 Succesfully logged in using md5 as AB34-6BONE (Andreas Bus chka) from 84.44.225.21" sock_printf() : "tunnel show T5589" sock_getline() : "201 Showing tunnel information for T5589" sock_getline() : "TunnelId: T5589" sock_getline() : "Type: ayiya" sock_getline() : "IPv6 Endpoint: 2001:6f8:900:440::2" sock_getline() : "IPv6 POP: 2001:6f8:900:440::1" sock_getline() : "IPv6 PrefixLength: 64" sock_getline() : "Tunnel MTU: 1280" sock_getline() : "Tunnel Name: My First Tunnel" sock_getline() : "POP Id: deham01" sock_getline() : "IPv4 Endpoint: ayiya" sock_getline() : "IPv4 POP: 212.224.0.188" sock_getline() : "UserState: enabled" sock_getline() : "AdminState: enabled" sock_getline() : "Password: (...)" sock_getline() : "Heartbeat_Interval: 60" sock_getline() : "202 Done" Succesfully retrieved tunnel information for T5589 sock_printf() : "QUIT Zij die gaan, groeten u" Tunnel Information for T5589: POP Id : deham01 IPv6 Local : 2001:6f8:900:440::2/64 IPv6 Remote : 2001:6f8:900:440::1/64 Tunnel Type : ayiya Adminstate : enabled Userstate : enabled Error opening registry key: SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E32 5-11CE-BFC1-08002BE10318}\Properties\ComponentId (t2) Found = 0, Count = 0 [tun-start] TAP-Win32 Adapter not configured properly... I have not found any way to work around this...