I have a new SBS 2008 setup in a small office environment that acts as DC, DNS server, and DHCP server (along with serving Quickbooks Accounting and Point of Sale). Every 7 to 8 days, I lose the network connection on it. My RMM agent that is installed will lose connection with my server and generate an alert that the server is offline. Connecting remotely will not work, connecting via RDC from another network computer will not work. Pinging the server from another computer on the network does return a response (I will have to confirm this next time, but I am almost certain).
There do not seem to be any error logs that apply. I thought it was due to a persistent DCOM error I was getting before (Network services permission issue), but I took care of that last week, and still had the server go down early yesterday morning.
This one is really baffling me. As a side note, we do not use Sharepoint, but being SBS, it is installed. Could this be a DNS or DHCP issue?