I have a following problem.
I have two ISA 2006 Enterprise Edition servers (one acting as a hot backup if the other one fails).
I downloaded the Avast 4 Server Edition (+ the ISA plug-in) trial version and installed it to both ISA servers.
On the primary server everything works like a charm but on the other server the ISA plug-in won't start.
During the installation process (on the secondary server) I received an error message: "Cannot register filter RegisterIsaFilter, error code 0xC00403A6"
I've tried pretty much everything and I'm in desperate need of fresh ideas.
