I found a registry hack for this but I tried something simple and non intrusive instead that I decided to share. Perhaps it will help someone.
My problem is that we changed the network so the Archive and Vault server names no longer resolves. I just changed the hosts file to map the names to the new location and that worked like a charm.
Its still a bit of a hack of course but in my case its good enough as I am just keeping an old legacy installation alive for reference.
Happy holidays, Magnus
A few lines from my hosts to explain the concept.