IPsec services error 87

Hi,

Suddenly, my IPSec config has stopped working under Windows XP. When I try to start the IPSec services service, I get the following error (translated from the Dutch version):

—
IPSec services service failed to start.

Error 87: The parameter is incorrect.
—

I’ve tried to reset my TCP/IP with netsh, reload the default policies in the IPSec snapin and spent hours searching the KB for “error 87”. I’m at a loss.

Could someone please shed some light on this?

Thanks,

Sven Hazejager