Environment: Windows Server Std R2 x64, running Exchange, AV etc...
Four machines in the past 24 hours have been unable to connect to our network of 30 wkstns. 3 x W7 and one XP. The NIC blue circle tries to resolve but them turns into a red cross. The NIC lights are flasing, it's not the cable or a rootkit or the drivers.
When I use 'detect network problems' from the wizard I get 'Windows could not automatically detect this network's proxy settings.
Also the network logon service will not start. I get Error 10050: A socket operation encountered a dead network.
This environment was previously a 2003SBS upgraded 30 months ago. The old DC is listed in the GC, could these machines suddenly be looking for the old network???
Four PCs I can rebuild, I'm just worried about this being a server issue, not a wkstn issue...and I don't want it to spread.