Re: [Openvpn-users] Windows XP SP2: TAP-Win32 non-functional after boot

[Anssi Kolehmainen <akolehma@xxxxxxxxxxxxx>]

On Mon, 1 Nov 2004, Richard Atterer wrote:
> I have one problem: On my Windows XP SP2 client, OpenVPN does *not* work
> unless I explicitly deactivate, then re-activate the TAP-Win32 adapter
> before starting OpenVPN. If I do this, everything works fine, I can connect
> (and reconnect many times) without problems.
>
> At the same time, the TAP-Win32 adapter is stuck in the "Netzwerkadresse
> beziehen" state. (German for "getting network address", i.e. it's sending
> out DHCP requests.)

This is the old unexplained mystery of SP2.
With me this was caused by Kerio Personal Firewall. After I removed it 
everything started working again. Disabling firewall wasn't enough. I had 
to completely uninstall it to get OpenVPN working. This "bug" affects also 
other network adapters, so even your norman lan card might stop working at 
some conditions.

So check all network related programs and try uninstalling them. (Lots of 
work and might not even work).

Anssi Kolehmainen

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