I'm not sure if this is a problem with WinGate, my Intel ethernet devices the motherboard or Windows but I'll post it here anyway.
Every now and then (maybe twice a week) all LAN clients lose connectivity and the usual "limited connectivity" exclamation mark is displayed over the network icon in the notification area. The server can still connect to internet, and everything seems peachy with ipconfig.
If I reboot the Wingate server, everything is fine again. The wonky thing is if I try to disable and re-enable the local network adapter, it won't turn grey. If I try again a few times, it does turn grey, but then won't turn on again. If I now try to reboot the Wingate server it will be stuck at "Restarting ..." and I need to hit the reset button.
Specs and images:
WinGate 8.1.0 Build 4655
Pretty standard but with Proxy server removed, no firewall, no bandwidth control.
Services installed: DHCP, DNS, Remote control, SMTP delivery and schedulers
Performance counters installed but disabled/stopped.
DHCP mode: Fully automatic
ips 192.168.3.2 to 192.168.3.5 reserved for various lan clients
Windows 8.1 update 1 x64 Pro
Intel Core i5-4570S
Asus H87I-Plus BIOS 0905
Logitech HID-compliant G3/MX518 Optical Mouse
Intel Ethernet Connection I217-V (84.xxx.xxx.xxx) driver e1i63x64.sys 126.96.36.199
Intel Gigabit CT Desktop Adapter (192.168.3.1) driver e1q63x64.sys 188.8.131.52
Clients OS: Windows 8.1 update 1 x64 Pro
Forum thread at WinGate: