"It worked for 3 days..."

You didn't install or update Anti-Virus did you?

Different circumstances, but I was recently using remote desktop on a PC with a free anti-virus and succumbed to their repeated requests to upgrade to the paid version. Long story short, the RDP connection dropped in the middle of the install. I couldn't even ping the local IP address, so I figured the PC needed rebooted.After finally getting to the machine, the local console was working fine, but only after a couple re-boots and a lot of hair-pulling I discovered that the AV had added it's own firewall that was locked down tight. I didn't have emanager to worry about, but I was running several remote services in addition to RDP and never did get everything running. I finally disable the AV firewall and went back to Windows Firewall and everything is mostly back to normal.