Endpoint Protection

I have a version 11 SEMP but I also have an older Legacy installation of Version 9 for some very old Windows 95/98 clients.  (no they can't be upgraded they are running proprietary software/just to answer that question :) )

Frankly, I don't interact with the virtual server that I have the version 9 server product on very often.  It's used by one of our branches so to my knowledge, no changes.

Here's what's happening:
On trying to unlock an existing (and formerly working) server group I get: "Can't communicate with the server group" Verify network connectivity and that machines are operating within the group"  If problem persists, try cleaning the server group cache and re-discovering all server groups.

I've dumped the server cache and tried an aggressive discovery.  I still get the same error.  I've asked the remote guy to double check that he has no network issues on this segment.
I'm rather stuck, what else can I look at.  If I can't unlock the server group I can't see or deal with anything.

(I really don't want to have to regenerate all the certificate info if I don't really have to/ aside from having to dig out "those instructions" from my archives)

can u check this document and make sure things are in place

Error: "Can't communicate with the Server Group

http://service1.symantec.com/SUPPORT/ent-security.nsf/docid/2005051209365248?OpenDocument 

Error: "Can't communicate with the Server Group...",but you could unlock this group in other host

http://service1.symantec.com/support/ent-security.nsf/docid/2008122415555448

 Most it is due to Services on Primary Server not started or HKEY_LOCAL_MACHINE\SOFTWARE\Intel\LanDesk\VirusProtect6\CurrentVersion\
ScSComms\LocalData\LoginCaCertIssueSerialNum
Value going higher than 256
Reset it to 1.

It is nothing but how many time you have unlocked the ServerGroup.